cq: remove no longer necessary cq_name.

R=sergiyb@chromium.org

Bug: chromium:866476
Change-Id: I1bc5477e4c51ae7e94e06718a8037ed65726fd47
No-Try: True
Reviewed-on: https://chromium-review.googlesource.com/1176229
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55141}

infra/config/cq.cfg

@@ -2,7 +2,6 @@
 # documentation of this file format.
 
 version: 1
-cq_name: "v8"
 cq_status_url: "https://chromium-cq-status.appspot.com"
 git_repo_url: "https://chromium.googlesource.com/v8/v8"
 commit_burst_delay: 60