ARM: configs: stm32: Remove FLASH_MEM_BASE and FLASH_SIZE in STM32 defconfig

Running make savedefconfig highlights some useless flags.

Remove FLASH_MEM_BASE and FLASH_SIZE as these 2 flags are only
used by CPU_ARM740T,CPU_ARM940T and CPU_ARM946E which is not the
case here for CPU_V7M.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20241220125506.3157268-2-patrice.chotard@foss.st.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: Patrice Chotard

arch/arm/configs/stm32_defconfig

@@ -18,8 +18,6 @@ CONFIG_ARCH_STM32=y
 CONFIG_CPU_V7M_NUM_IRQ=240
 CONFIG_SET_MEM_PARAM=y
 CONFIG_DRAM_BASE=0x90000000
-CONFIG_FLASH_MEM_BASE=0x08000000
-CONFIG_FLASH_SIZE=0x00200000
 # CONFIG_ATAGS is not set
 CONFIG_XIP_KERNEL=y
 CONFIG_XIP_PHYS_ADDR=0x08008000