build: Remove unused qcom CFLAG

Change-Id: I6ead3e57899bcb007d4d284901f918a65a9e6926
(cherry picked from commit 4ec657f932932cc9d18928d4be138e52eeefff89)
Allow repopick to cherry-pick a specific patch set

Use 'repopick 123456/9' where '123456' is the change number
and '9' is the desired patchset.

Change-Id: I2d9f6939fbde50b2a6057b75d2e7f722be5a3e21
(cherry picked from commit 73b697d956fc22fe9ae80adb64a1661a04f90903)