contrib: Remove arm_trusted_firmware_uprev

The arm_trusted_firmware_uprev script directly pushes to cros/master.
Now we are changing to the solution of uploading "merge commit" CLs to
Gerrit, a separate script firmware/uprev_atf is introduced in
CL:6845318. Therefore, remove the deprecated script.

BUG=b:412255085
TEST=cq

Change-Id: If5be97a2b2db5359cea1a6f64554af0bfd100235
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6864423
Tested-by: Yu-Ping Wu <[email protected]>
Reviewed-by: Yidi Lin <[email protected]>
Commit-Queue: Yu-Ping Wu <[email protected]>
1 file changed