Merge "remove errorprone/processor classpath from r8 flags" am: acddda07

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2411040



Change-Id: I48225a7720794ad7134c003d580b40387e7e1bf1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>