contrib/gen_uprev_msg.py: Wrap long commit title

Wrap long commit title. Remove BRANCH tag. Fix minor style problems.

BUG=none
TEST=./gen_uprev_msg.py

Change-Id: I9c85b895fb8bb4f8a44a97eb180a5916d5b6b212
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2846438
Tested-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Chen-Tsung Hsieh <chentsung@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
1 file changed