diff --git a/include/logging/sys_log.h b/include/logging/sys_log.h
deleted file mode 100644
index 45b306356f4..00000000000
--- a/include/logging/sys_log.h
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * Copyright (c) 2016 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/** @file sys_log.h
- *  @brief Logging macros.
- */
-#ifndef ZEPHYR_INCLUDE_LOGGING_SYS_LOG_H_
-#define ZEPHYR_INCLUDE_LOGGING_SYS_LOG_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define SYS_LOG_LEVEL_OFF 0
-#define SYS_LOG_LEVEL_ERROR 1
-#define SYS_LOG_LEVEL_WARNING 2
-#define SYS_LOG_LEVEL_INFO 3
-#define SYS_LOG_LEVEL_DEBUG 4
-
-/* Determine this compile unit log level */
-#if !defined(SYS_LOG_LEVEL)
-/* Use default */
-#define SYS_LOG_LEVEL CONFIG_SYS_LOG_DEFAULT_LEVEL
-#elif (SYS_LOG_LEVEL < CONFIG_SYS_LOG_OVERRIDE_LEVEL)
-/* Use override */
-#undef SYS_LOG_LEVEL
-#define SYS_LOG_LEVEL CONFIG_SYS_LOG_OVERRIDE_LEVEL
-#endif
-
-/**
- * @brief System Log
- * @defgroup system_log System Log
- * @ingroup logging
- * @{
- */
-#if defined(CONFIG_SYS_LOG) && (SYS_LOG_LEVEL > SYS_LOG_LEVEL_OFF)
-
-extern void (*syslog_hook)(const char *fmt, ...);
-void syslog_hook_install(void (*hook)(const char *, ...));
-
-/* decide print func */
-#if defined(CONFIG_SYS_LOG_EXT_HOOK)
-#define SYS_LOG_BACKEND_FN syslog_hook
-#else
-#include <misc/printk.h>
-#define SYS_LOG_BACKEND_FN printk
-#endif
-
-/* Should use color? */
-#if defined(CONFIG_SYS_LOG_SHOW_COLOR)
-#define SYS_LOG_COLOR_OFF     "\x1B[0m"
-#define SYS_LOG_COLOR_RED     "\x1B[0;31m"
-#define SYS_LOG_COLOR_YELLOW  "\x1B[0;33m"
-#else
-#define SYS_LOG_COLOR_OFF     ""
-#define SYS_LOG_COLOR_RED     ""
-#define SYS_LOG_COLOR_YELLOW  ""
-#endif /* CONFIG_SYS_LOG_SHOW_COLOR */
-
-/* Should use log lv tags? */
-#if defined(CONFIG_SYS_LOG_SHOW_TAGS)
-#define SYS_LOG_TAG_ERR " [ERR]"
-#define SYS_LOG_TAG_WRN " [WRN]"
-#define SYS_LOG_TAG_INF " [INF]"
-#define SYS_LOG_TAG_DBG " [DBG]"
-#else
-#define SYS_LOG_TAG_ERR ""
-#define SYS_LOG_TAG_WRN ""
-#define SYS_LOG_TAG_INF ""
-#define SYS_LOG_TAG_DBG ""
-#endif /* CONFIG_SYS_LOG_SHOW_TAGS */
-
-/* Log domain name */
-#if !defined(SYS_LOG_DOMAIN)
-#define SYS_LOG_DOMAIN "general"
-#endif /* SYS_LOG_DOMAIN */
-
-/**
- * @def SYS_LOG_NO_NEWLINE
- *
- * @brief Specifies whether SYS_LOG should add newline at the end of line
- * or not.
- *
- * @details User can define SYS_LOG_NO_NEWLINE no prevent the header file
- * from adding newline if the debug print already has a newline character.
- */
-#if !defined(SYS_LOG_NO_NEWLINE)
-#define SYS_LOG_NL "\n"
-#else
-#define SYS_LOG_NL ""
-#endif
-
-/* [domain] [level] function: */
-#define LOG_LAYOUT "[%s]%s %s: %s"
-#define LOG_BACKEND_CALL(log_lv, log_color, log_format, color_off, ...)	\
-	SYS_LOG_BACKEND_FN(LOG_LAYOUT log_format "%s" SYS_LOG_NL,	\
-	SYS_LOG_DOMAIN, log_lv, __func__, log_color, ##__VA_ARGS__, color_off)
-
-#define LOG_NO_COLOR(log_lv, log_format, ...)				\
-	LOG_BACKEND_CALL(log_lv, "", log_format, "", ##__VA_ARGS__)
-#define LOG_COLOR(log_lv, log_color, log_format, ...)			\
-	LOG_BACKEND_CALL(log_lv, log_color, log_format,			\
-	SYS_LOG_COLOR_OFF, ##__VA_ARGS__)
-
-#define SYS_LOG_ERR(...) __DEPRECATED_MACRO				\
-	LOG_COLOR(SYS_LOG_TAG_ERR, SYS_LOG_COLOR_RED, ##__VA_ARGS__)
-
-#if (SYS_LOG_LEVEL >= SYS_LOG_LEVEL_WARNING)
-#define SYS_LOG_WRN(...) __DEPRECATED_MACRO LOG_COLOR(SYS_LOG_TAG_WRN,  \
-	SYS_LOG_COLOR_YELLOW, ##__VA_ARGS__)
-#endif
-
-#if (SYS_LOG_LEVEL >= SYS_LOG_LEVEL_INFO)
-#define SYS_LOG_INF(...) __DEPRECATED_MACRO				\
-	LOG_NO_COLOR(SYS_LOG_TAG_INF, ##__VA_ARGS__)
-#endif
-
-#if (SYS_LOG_LEVEL == SYS_LOG_LEVEL_DEBUG)
-#define SYS_LOG_DBG(...) __DEPRECATED_MACRO				\
-	LOG_NO_COLOR(SYS_LOG_TAG_DBG, ##__VA_ARGS__)
-#endif
-
-#else
-/**
- * @def SYS_LOG_ERR
- *
- * @brief Writes an ERROR level message to the log.
- *
- * @details Lowest logging level, these messages are logged whenever sys log is
- * active. it's meant to report severe errors, such as those from which it's
- * not possible to recover.
- *
- * @param ... A string optionally containing printk valid conversion specifier,
- * followed by as many values as specifiers.
- * @deprecated Use LOG_ERR
- */
-#define SYS_LOG_ERR(...) { ; }
-#endif /* CONFIG_SYS_LOG */
-
-/* create dummy macros */
-#if !defined(SYS_LOG_WRN)
-/**
- * @def SYS_LOG_WRN
- *
- * @brief Writes a WARNING level message to the log.
- *
- * @details available if SYS_LOG_LEVEL is SYS_LOG_LEVEL_WARNING or higher.
- * It's meant to register messages related to unusual situations that are
- * not necessarily errors.
- *
- * @param ... A string optionally containing printk valid conversion specifier,
- * followed by as many values as specifiers.
- * @deprecated Use LOG_WRN
- */
-#define SYS_LOG_WRN(...) { ; }
-#endif
-
-#if !defined(SYS_LOG_INF)
-/**
- * @def SYS_LOG_INF
- *
- * @brief Writes an INFO level message to the log.
- *
- * @details available if SYS_LOG_LEVEL is SYS_LOG_LEVEL_INFO or higher.
- * It's meant to write generic user oriented messages.
- *
- * @param ... A string optionally containing printk valid conversion specifier,
- * followed by as many values as specifiers.
- *
- * @deprecated Use LOG_INF
- */
-#define SYS_LOG_INF(...) { ; }
-#endif
-
-#if !defined(SYS_LOG_DBG)
-/**
- * @def SYS_LOG_DBG
- *
- * @brief Writes a DEBUG level message to the log.
- *
- * @details highest logging level, available if SYS_LOG_LEVEL is
- * SYS_LOG_LEVEL_DEBUG. It's meant to write developer oriented information.
- *
- * @param ... A string optionally containing printk valid conversion specifier,
- * followed by as many values as specifiers.
- *
- * @deprecated Use LOG_DBG
- */
-#define SYS_LOG_DBG(...) { ; }
-#endif
-/**
- * @}
- */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZEPHYR_INCLUDE_LOGGING_SYS_LOG_H_ */
diff --git a/samples/net/google_iot_mqtt/prj.conf b/samples/net/google_iot_mqtt/prj.conf
index eabb78c0edf..34bca908b30 100644
--- a/samples/net/google_iot_mqtt/prj.conf
+++ b/samples/net/google_iot_mqtt/prj.conf
@@ -20,8 +20,6 @@ CONFIG_NET_MGMT=y
 CONFIG_NET_MGMT_EVENT=y
 
 CONFIG_LOG=y
-CONFIG_SYS_LOG=y
-CONFIG_SYS_LOG_DEFAULT_LEVEL=4
 
 # This shouldn't need to be set, but isn't selected properly.
 CONFIG_NEWLIB_LIBC=y
diff --git a/subsys/logging/CMakeLists.txt b/subsys/logging/CMakeLists.txt
index 03dff816ec6..dae98605e32 100644
--- a/subsys/logging/CMakeLists.txt
+++ b/subsys/logging/CMakeLists.txt
@@ -1,6 +1,3 @@
-zephyr_sources_ifdef(CONFIG_SYS_LOG sys_log.c)
-zephyr_sources_ifdef(CONFIG_SYS_LOG_BACKEND_NET sys_log_net.c)
-
 zephyr_sources_ifdef(
   CONFIG_LOG
   log_list.c
diff --git a/subsys/logging/sys_log.c b/subsys/logging/sys_log.c
deleted file mode 100644
index dcbc63f2149..00000000000
--- a/subsys/logging/sys_log.c
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2016 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include <logging/sys_log.h>
-
-void syslog_hook_default(const char *fmt, ...)
-{
-	(void)(fmt);  /* Prevent warning about unused argument */
-}
-
-void (*syslog_hook)(const char *fmt, ...) = syslog_hook_default;
-
-void syslog_hook_install(void (*hook)(const char *, ...))
-{
-	syslog_hook = hook;
-}
diff --git a/subsys/logging/sys_log_net.c b/subsys/logging/sys_log_net.c
deleted file mode 100644
index dbd6428cb5b..00000000000
--- a/subsys/logging/sys_log_net.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Copyright (c) 2018 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include <logging/sys_log.h>
-
-#include <net/net_pkt.h>
-#include <net/net_context.h>
-
-/* Set this to 1 if you want to see what is being sent to server */
-#define DEBUG_PRINTING 0
-
-static struct net_context *ctx;
-static struct sockaddr server_addr;
-
-/* FIXME: As there is no way to figure out these values in the hook
- * function, use some pre-defined values. Change this to use the
- * real facility and severity of the logging call when that info is
- * available.
- */
-static const int facility = 16; /* local0 */
-static const int severity = 6; /* info */
-
-#define DATE_EPOCH "1970-01-01T00:00:00.000000-00:00"
-static char date[sizeof(DATE_EPOCH)];
-
-#if defined(CONFIG_NET_IPV6) || CONFIG_NET_HOSTNAME_ENABLE
-#define MAX_HOSTNAME_LEN NET_IPV6_ADDR_LEN
-#else
-#define MAX_HOSTNAME_LEN NET_IPV4_ADDR_LEN
-#endif
-
-static char hostname[MAX_HOSTNAME_LEN + 1];
-
-NET_PKT_SLAB_DEFINE(syslog_tx_pkts, CONFIG_SYS_LOG_BACKEND_NET_MAX_BUF);
-NET_BUF_POOL_DEFINE(syslog_tx_bufs, CONFIG_SYS_LOG_BACKEND_NET_MAX_BUF,
-		    CONFIG_SYS_LOG_BACKEND_NET_MAX_BUF_SIZE,
-		    CONFIG_NET_BUF_USER_DATA_SIZE, NULL);
-
-static struct k_mem_slab *get_tx_slab(void)
-{
-	return &syslog_tx_pkts;
-}
-
-struct net_buf_pool *get_data_pool(void)
-{
-	return &syslog_tx_bufs;
-}
-
-static void fill_header(struct net_buf *buf)
-{
-	snprintk(net_buf_tail(buf),
-		 net_buf_tailroom(buf),
-		 "<%d>1 %s %s - - - - ",
-		 facility * 8 + severity,
-		 date,
-		 hostname);
-
-	net_buf_add(buf, strlen(buf->data));
-}
-
-static void syslog_hook_net(const char *fmt, ...)
-{
-	struct net_buf *buf;
-	va_list vargs;
-	u8_t *ptr;
-	int ret;
-
-	buf = net_buf_alloc(&syslog_tx_bufs, K_NO_WAIT);
-	if (!buf) {
-		return;
-	}
-
-	fill_header(buf);
-
-	va_start(vargs, fmt);
-
-	ptr = net_buf_tail(buf);
-
-	ret = vsnprintk(ptr, (net_buf_tailroom(buf) - 1), fmt, vargs);
-	if (ret < 0) {
-		return;
-	}
-
-	va_end(vargs);
-
-	if (ret > 0 && ptr[ret - 1] == '\n') {
-		/* No need to send \n to peer so strip it away */
-		ret--;
-	}
-
-	net_buf_add(buf, ret);
-
-#if DEBUG_PRINTING
-	{
-		static u32_t count;
-
-		printk("%d:%s", ++count, buf->data);
-	}
-#endif
-	net_context_send(ctx, buf->data, buf->len, NULL, K_NO_WAIT, NULL);
-
-	net_buf_unref(buf);
-}
-
-void syslog_net_hook_install(void)
-{
-#if defined(CONFIG_NET_IPV6)
-	struct sockaddr_in6 local_addr6 = {
-		.sin6_family = AF_INET6,
-		.sin6_port = 0,
-	};
-#endif
-#if defined(CONFIG_NET_IPV4)
-	struct sockaddr_in local_addr4 = {
-		.sin_family = AF_INET,
-		.sin_port = 0,
-	};
-#endif
-	struct sockaddr *local_addr = NULL;
-	socklen_t local_addr_len = 0;
-	socklen_t server_addr_len = 0;
-	int ret;
-
-	net_sin(&server_addr)->sin_port = htons(514);
-
-	ret = net_ipaddr_parse(CONFIG_SYS_LOG_BACKEND_NET_SERVER,
-			       sizeof(CONFIG_SYS_LOG_BACKEND_NET_SERVER) - 1,
-			       &server_addr);
-	if (ret == 0) {
-		SYS_LOG_ERR("Cannot configure syslog server address");
-		return;
-	}
-
-#if defined(CONFIG_NET_IPV4)
-	if (server_addr.sa_family == AF_INET) {
-		local_addr = (struct sockaddr *)&local_addr4;
-		local_addr_len = sizeof(struct sockaddr_in);
-		server_addr_len = sizeof(struct sockaddr_in);
-	}
-#endif
-
-#if defined(CONFIG_NET_IPV6)
-	if (server_addr.sa_family == AF_INET6) {
-		local_addr = (struct sockaddr *)&local_addr6;
-		local_addr_len = sizeof(struct sockaddr_in6);
-		server_addr_len = sizeof(struct sockaddr_in6);
-	}
-#endif
-
-	ret = net_context_get(server_addr.sa_family, SOCK_DGRAM, IPPROTO_UDP,
-			      &ctx);
-	if (ret < 0) {
-		SYS_LOG_ERR("Cannot get context (%d)", ret);
-		return;
-	}
-
-#if CONFIG_NET_HOSTNAME_ENABLE
-	(void)memcpy(hostname, net_hostname_get(), MAX_HOSTNAME_LEN);
-#else /* CONFIG_NET_HOSTNAME_ENABLE */
-	if (server_addr.sa_family == AF_INET6) {
-#if defined(CONFIG_NET_IPV6)
-		const struct in6_addr *src;
-
-		src = net_if_ipv6_select_src_addr(
-			NULL, &net_sin6(&server_addr)->sin6_addr);
-		if (src) {
-			net_addr_ntop(AF_INET6, src, hostname,
-				      MAX_HOSTNAME_LEN);
-
-			net_ipaddr_copy(&local_addr6.sin6_addr, src);
-		} else {
-			goto unknown;
-		}
-#else
-		goto unknown;
-#endif
-	} else if (server_addr.sa_family == AF_INET) {
-#if defined(CONFIG_NET_IPV4)
-		struct net_if_ipv4 *ipv4;
-		struct net_if *iface;
-
-		iface = net_if_ipv4_select_src_iface(
-					&net_sin(&server_addr)->sin_addr);
-		ipv4 = iface->config.ip.ipv4;
-
-		net_ipaddr_copy(&local_addr4.sin_addr,
-				&ipv4->unicast[0].address.in_addr);
-
-		net_addr_ntop(AF_INET, &local_addr4.sin_addr, hostname,
-			      MAX_HOSTNAME_LEN);
-#else
-		goto unknown;
-#endif
-	} else {
-	unknown:
-		strncpy(hostname, "zephyr", MAX_HOSTNAME_LEN);
-	}
-#endif /* CONFIG_NET_HOSTNAME_ENABLE */
-
-	ret = net_context_bind(ctx, local_addr, local_addr_len);
-	if (ret < 0) {
-		SYS_LOG_ERR("Cannot bind context (%d)", ret);
-		return;
-	}
-
-	ret = net_context_connect(ctx, &server_addr, server_addr_len,
-				  NULL, K_NO_WAIT, NULL);
-
-	/* We do not care about return value for this UDP connect call that
-	 * basically does nothing. Calling the connect is only useful so that
-	 * we can see the syslog connection in net-shell.
-	 */
-
-	net_context_setup_pools(ctx, get_tx_slab, get_data_pool);
-
-	syslog_hook_install(syslog_hook_net);
-}