[ARM] Remove redundant CONFIG_DEBUG_INFO.

ARM had CONFIG_DEBUG_INFO for ages.  Unfortunately, the new
CONFIG_DEBUG_INFO was rather blindly applied across all architectures.
This removes the duplication from the ARM architecture.

arch/arm/Kconfig

@@ -1016,15 +1016,6 @@ config DEBUG_ERRORS
 	  you are concerned with the code size or don't want to see these
 	  messages.
 
-config DEBUG_INFO
-	bool "Compile the kernel with debug info"
-	depends on DEBUG_KERNEL
-	help
-          If you say Y here the resulting kernel image will include
-	  debugging info resulting in a larger kernel image.
-	  Say Y here only if you plan to use gdb to debug the kernel.
-	  If you don't debug the kernel, you can say N.
-
 # These options are only for real kernel hackers who want to get their hands dirty. 
 config DEBUG_LL
 	bool "Kernel low-level debugging functions"

arch/arm/Makefile

@@ -20,10 +20,6 @@ ifeq ($(CONFIG_FRAME_POINTER),y)
 CFLAGS		+=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
 endif
 
-ifeq ($(CONFIG_DEBUG_INFO),y)
-CFLAGS		+=-g
-endif
-
 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
 CFLAGS		+= -mbig-endian
 AS		+= -EB