Revert "Grant CQ/CR to roller on refs/for/*"

This reverts commit 9f44e232898f8b3d842a579bad03bdce65a08529.

Reason for revert: Not necessary

Original change's description:
> Grant CQ/CR to roller on refs/for/*
> 
> Change-Id: I8a7823bee8faa3de1a4c8b1ec4cb95519386bec0

TBR=mohrr@google.com,nmulcahey@google.com

Change-Id: Icfc5920b41d19f8dfd8df74561671ea68bde23f1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true