soc: stm32: STM32F4: Remove useless package digit

Fixes #16733, applied to STM32F4 series.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>

soc/arm/st_stm32/stm32f4/Kconfig.defconfig.stm32f469xx

@@ -0,0 +1,44 @@
+# Kconfig - ST STM32F469XI MCU configuration options
+#
+# Copyright (c) 2016 Linaro Limited.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if SOC_STM32F469XX
+
+config SOC
+	string
+	default "stm32f469xx"
+
+config NUM_IRQS
+	int
+	default 93
+
+if GPIO_STM32
+
+config GPIO_STM32_PORTF
+	default y
+
+config GPIO_STM32_PORTG
+	default y
+
+config GPIO_STM32_PORTI
+	default y
+
+config GPIO_STM32_PORTJ
+	default y
+
+config GPIO_STM32_PORTK
+	default y
+
+endif # GPIO_STM32
+
+if ENTROPY_GENERATOR
+
+config ENTROPY_STM32_RNG
+	default y
+
+endif # ENTROPY_GENERATOR
+
+endif # SOC_STM32F469XX