Merge "Soong: remove obsolete proto lib from unit test" into main am: 54082dd8

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3097659



Change-Id: I63015d8cda84651c62996c608804431bbf08d92f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>