[CQ] Make fuchsia trybots blocking

NOTRY=true
TBR=sergiyb@chromium.org

Bug: chromium:772816
Change-Id: I68cd583444531bfac2984794512a86e6880f57d5
Reviewed-on: https://chromium-review.googlesource.com/757396Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49199}

infra/config/cq.cfg

@@ -34,10 +34,7 @@ verifiers {
     buckets {
       name: "master.tryserver.v8"
       builders { name: "v8_android_arm_compile_rel" }
-      builders {
-        name: "v8_fuchsia_rel_ng"
-        experiment_percentage: 100
-      }
+      builders { name: "v8_fuchsia_rel_ng" }
       builders { name: "v8_node_linux64_rel" }
       builders { name: "v8_linux64_asan_rel_ng" }
       builders {