Disable CanIgnoreReturnValueSuggester am: 304f451014

Original change: https://android-review.googlesource.com/c/platform/external/error_prone/+/2258090

Change-Id: I0479821baf03f02c65cb5d5c289532cbe3982b7f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>