Various features already implemented hadn't removed suppressions for GLES 3.1. Bug: angleproject:3205 Bug: angleproject:3208 Bug: angleproject:3561 Bug: angleproject:3604 Change-Id: I1cfc5d2150fae6b138fa21a37f8e95cb7d764770 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1771989 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Ian Elliott <ianelliott@google.com>
