Revert "Restrict access to release branch: release-R113 to LTS Refresher group."

This reverts commit f40f5bf0dc3a0496c3aa36905a76c24db4970af0.

Reason for revert: Done with lts release - http://sponge2.corp.google.com/091589eb-2aec-4034-81b9-d1feb657743b

Change-Id: I6955cac036771bb4f9058f370e5f1a2a76079ba3
Reviewed-on: https://cos-review.googlesource.com/c/All-Projects/+/115501
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Angel Adetula <angeladetula@google.com>