Merge "Remove unused empty filegroups from frameworks/base." am: 5ee9c551...

Merge "Remove unused empty filegroups from frameworks/base." am: 5ee9c551 am: 76e9b955 am: 735d0192 am: 36b1820a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2026205



Change-Id: Iba65889161a6ed1fb44115cdd75bcb69f85126c2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>