Revert "Handle Clang's change of defaults from -fcommon to -fno-common" am:...

Revert "Handle Clang's change of defaults from -fcommon to -fno-common" am: 4e0f6451 am: e380846f am: 77b54026 am: 7c9d4a78 am: 4940d032

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2706193



Change-Id: I3c4f1a996cacececab69ef645960ba56ae2197da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>