Remove TARGET_GLOBAL_CFLAGS use

This doesn't do anything - TARGET_GLOBAL_CFLAGS is reset in
build/core/combo/select.mk. (And these options are already in the global
cflags for ARMv7 targets).

BoardConfig files also should not be changing global cflags.

Change-Id: Ie6944a8e14dd7aeb17a0c8f241511bc05a26d851
1 file changed