Revert of Make ios CQ builders experimental. (patchset chromium#1 id:…

…1 of https://codereview.chromium.org/1426303002/ )

Reason for revert:
The tree is closed, anyway, so this builder is not blocking CLs from landing.

Original issue's description:
> Make ios CQ builders experimental.
>
> Most of the slaves are offline, so as a temporary measure
> make the builders a 10% experiment.
>
> BUG=550805
> NOTRY=True
>
> Committed: https://crrev.com/19fec167b31487670bd1f15ded6c86f3eb57bdcf
> Cr-Commit-Position: refs/heads/master@{#357539}

TBR=phajdan.jr@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=550805

Review URL: https://codereview.chromium.org/1425413002

Cr-Commit-Position: refs/heads/master@{#357543}

infra/config/cq.cfg

@@ -60,14 +60,8 @@ verifiers {
     }
     buckets {
       name: "tryserver.chromium.mac"
-      builders {
-        name: "ios_dbg_simulator_ninja"
-        experiment_percentage: 10
-      }
-      builders {
-        name: "ios_rel_device_ninja"
-        experiment_percentage: 10
-      }
+      builders { name: "ios_dbg_simulator_ninja" }
+      builders { name: "ios_rel_device_ninja" }
       builders { name: "mac_chromium_compile_dbg_ng" }
       builders { name: "mac_chromium_gn_rel" }
       builders { name: "mac_chromium_rel_ng" }