diff --git a/kernel/unified/include/wait_q.h b/kernel/unified/include/wait_q.h
index 6987d35c339..0ecefd1f974 100644
--- a/kernel/unified/include/wait_q.h
+++ b/kernel/unified/include/wait_q.h
@@ -81,8 +81,6 @@ static inline void _timeout_remove_tcs_from_wait_q(struct tcs *tcs)
 }
 #include <timeout_q.h>
 
-	#define _TIMEOUT_TICK_GET()  sys_tick_get()
-
 	#define _TIMEOUT_ADD(thread, pq, ticks) \
 		do { \
 			if ((ticks) != TICKS_UNLIMITED) { \
@@ -90,37 +88,20 @@ static inline void _timeout_remove_tcs_from_wait_q(struct tcs *tcs)
 			} \
 		} while (0)
 
-	#define _TIMEOUT_UPDATE(timeout, limit, cur_ticks) \
-		do { \
-			if ((timeout) != TICKS_UNLIMITED) { \
-				(timeout) = (int32_t)((limit) - (cur_ticks)); \
-			} \
-		} while (0)
-
 #elif defined(CONFIG_NANO_TIMERS)
 #include <timeout_q.h>
 	#define _timeout_tcs_init(tcs) do { } while ((0))
 	#define _timeout_abort(tcs) do { } while ((0))
 
-	#define _TIMEOUT_TICK_GET()  0
 	#define _TIMEOUT_ADD(thread, pq, ticks) do { } while (0)
-	#define _TIMEOUT_UPDATE(timeout, limit, cur_ticks) do { } while (0)
 #else
 	#define _timeout_tcs_init(tcs) do { } while ((0))
 	#define _timeout_abort(tcs) do { } while ((0))
 	#define _timeout_get_next_expiry() (K_FOREVER)
 
-	#define _TIMEOUT_TICK_GET()  0
 	#define _TIMEOUT_ADD(thread, pq, ticks) do { } while (0)
-	#define _TIMEOUT_UPDATE(timeout, limit, cur_ticks) do { } while (0)
 #endif
 
-	#define _NANO_OBJECT_WAIT(queue, data, timeout, key)     \
-		do {                                             \
-			nano_cpu_atomic_idle(key);               \
-			key = irq_lock();                        \
-		} while (0)
-
 #ifdef __cplusplus
 }
 #endif