This commit removes several CFLAGS inherited from Linux Kconfig
that are not used in the current build system.
- The option fno-delete-null-pointer-checks is not used.
- O2 is not a default option and the symbol
CONFIG_CC_OPTIMIZE_FOR_SIZE is not supported.
- The option allow-store-data-races=0 is not used.
- The fno-stack-protector was being added twice and is not
a default parameter.
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
Change-Id: I3791d995638dea50796f041e558a39d5aa7e88f6