[cq] Reenable gcc trybot after infra fix

BUG=chromium:626622
NOTRY=true
NOPRESUBMIT=true
TBR=sergiyb@chromium.org

Review-Url: https://codereview.chromium.org/2147023003
Cr-Commit-Position: refs/heads/master@{#37742}

infra/config/cq.cfg

@@ -63,10 +63,7 @@ verifiers {
         name: "v8_linux_dbg_ng_triggered"
         triggered_by: "v8_linux_dbg_ng"
       }
-      builders {
-        name: "v8_linux_gcc_compile_rel"
-        experiment_percentage: 100
-      }
+      builders { name: "v8_linux_gcc_compile_rel" }
       builders { name: "v8_linux_mipsel_compile_rel" }
       builders { name: "v8_linux_mips64el_compile_rel" }
       builders { name: "v8_linux_nodcheck_rel_ng" }