Android: Move third_party/checkstyle to CIPD

It's the last user of GCS bucket "chromium-android-tools"

Change-Id: I51b0c296e83f18effa155ae4f6d2ca6d84733b8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1524975
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641323}
3 files changed