Remove Android signing restriction of M54+

Effectively, this will sign Android platform apks in M53, the first ARC
release.

TEST=Haven't heard problem from the latest Dev release 8737.1.0
BUG=b:29915721

Change-Id: Ic71f04e7fddbe3d020c57f9933e09b5537ee7370
Reviewed-on: https://chromium-review.googlesource.com/376799
Tested-by: Victor Hsieh <victorhsieh@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
1 file changed