Enable depot_tools_presubmit trybot for CQ.

The last remaining failing test is fixed now, so we
should be fine with enabling this trybot for CQ.

BUG=420910

Review URL: https://codereview.chromium.org/1149943010

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295540 0039d316-1c4b-4281-b951-d872f2087c98

infra/config/cq.cfg

@@ -32,14 +32,7 @@ verifiers {
       name: "tryserver.chromium.linux"
       builders {
         name: "depot_tools_presubmit"
-        experiment_percentage: 1.0
       }
     }
   }
 }
-
-verifiers_with_patch {
-  presubmit_check {
-    timeout: 900
-  }
-}