[autoroll] Remove Tint -> Chromium roller
[autoroll] Remove Tint -> Chromium roller

Tint is now rolled as a transitive dep of Dawn.

Change-Id: I553bfd5ca2c9c0bb396f30ce300fdfa7ba8759da
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/353439
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
Reviewed-by: Dan Sinclair <f70dc21b1b6a10340b65b6dcc0bde33e44f9236b@chromium.org>
Commit-Queue: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot