Promote win-libfuzzer-asan-rel CQ bot out of experimental.

Cycle time and failure rate looks good.

Bug: 893614
Change-Id: I43fcdf7f8e1b920ec784c0c67025e72aa7169873
Reviewed-on: https://chromium-review.googlesource.com/c/1299973Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603113}

infra/config/branch/cq.cfg

@@ -172,10 +172,7 @@ verifiers {
         path_regexp: "third_party/blink/renderer/modules/webgl/.+"
         path_regexp: "ui/gl/.+"
       }
-      builders {
-        name: "win-libfuzzer-asan-rel"
-        experiment_percentage: 100
-      }
+      builders { name: "win-libfuzzer-asan-rel" }
       builders { name: "win10_chromium_x64_rel_ng" }
       builders {
         name: "win7_chromium_rel_loc_exp"