Revert of Make linux_chromium_clobber_rel_ng experimental (patchset c…

…hromium#1 id:1 of https://codereview.chromium.org/1403443004/ )

Reason for revert:
Having a bot that mirrors clobber bot on FYI waterfall is better than having nothing.

Original issue's description:
> Make linux_chromium_clobber_rel_ng experimental
>
> This is needed to avoid tree breakages before making it mirror Linux GN Clobber.
> Since currently, linux_chromium_clobber_rel_ng is mirroring a bot on FYI
> waterfal it is not useful in CQ anyway.
>
> R=phajdan.jr@chromium.org
> BUG=531296
>
> Committed: https://crrev.com/7ff7bb3be8f97dbcb1ed7e225fb7acdef15c3cc1
> Cr-Commit-Position: refs/heads/master@{#354241}

TBR=phajdan.jr@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=531296

Review URL: https://codereview.chromium.org/1420503003

Cr-Commit-Position: refs/heads/master@{#355042}

infra/config/cq.cfg

@@ -44,10 +44,7 @@ verifiers {
       builders { name: "linux_chromium_chromeos_compile_dbg_ng" }
       builders { name: "linux_chromium_chromeos_ozone_rel_ng" }
       builders { name: "linux_chromium_chromeos_rel_ng" }
-      builders {
-        name: "linux_chromium_clobber_rel_ng"
-        experiment_percentage: 100
-      }
+      builders { name: "linux_chromium_clobber_rel_ng" }
       builders { name: "linux_chromium_compile_dbg_32_ng" }
       builders { name: "linux_chromium_compile_dbg_ng" }
       builders { name: "linux_chromium_gn_chromeos_rel" }