This deletes redundant sha1 files that are not required anymore since the migration to CIPD. Bug: angleproject:5811 Change-Id: Ib1131f9cdda0b00b8f605f8b6dff6650d262ce25 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2810789Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>
