Makefile: Remove unused macro

Removed unused macro AARCH32 and AARCH64 from makefile

Change-Id: I6729e300f18d66dd7c6978d3bbd5a88937839c31
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>

Makefile

@@ -1067,13 +1067,6 @@ ifneq ($(findstring clang,$(notdir $(CC))),)
 else
     CPPFLAGS		+= 	-Wno-error=deprecated-declarations -Wno-error=cpp
 endif
-
-# AARCH32/AARCH64 macros are deprecated in favor of the compiler-builtin __aarch64__.
-ifeq (${ARCH},aarch32)
-        $(eval $(call add_define,AARCH32))
-else
-        $(eval $(call add_define,AARCH64))
-endif
 endif # !ERROR_DEPRECATED
 
 $(eval $(call MAKE_LIB_DIRS))