Revert "clang: add support for neon-vfp instructions"

This reverts commit 8675f6783935ad0fe5dc5eaa7ae16366394681aa.
Merge tag 'android-4.4_r1' into cm-11.0

Android 4.4 Release 1.0
Merge remote-tracking branch 'cm/cm-11.0' into HEAD

Conflicts:
	lib/Driver/Tools.cpp

Change-Id: If4a84746e42d0e465ef8ef628c1a61f7016b0be5