Remove cq_name

Fixes:
ERROR: cq.cfg: cq_name is no longer used and can and should be removed. Please, do so now

TBR: tandrii
Change-Id: I545e2f7bff6a045bb46ef10d2a863db466f88c79
Reviewed-on: https://chromium-review.googlesource.com/1226034
Reviewed-by: Ryan Tseng <hinoka@chromium.org>
Commit-Queue: Ryan Tseng <hinoka@chromium.org>

infra/config/cq.cfg

@@ -2,7 +2,6 @@
 # documentation of this file format.
 
 version: 1
-cq_name: "custom-tabs-client"
 git_repo_url: "https://chromium.googlesource.com/custom-tabs-client"
 cq_status_url: "https://chromium-cq-status.appspot.com"