Revert "Restrict access to branch release-R125 to LTS Refresher group."

This reverts commit 18a2de74b171ef71273cd85c6e48b560846a4765.

Reason for revert: merge is done

Change-Id: Icb741115385977a29ced059bd12b8b17529befa8
Reviewed-on: https://cos-review.googlesource.com/c/All-Projects/+/210549
Reviewed-by: Derek Taylor <ddtaylor@google.com>
Tested-by: He Gao <hegao@google.com>