[CQ] Temporarily switch off pure swarming bots.

NOTRY=true
NOTREECHECKS=true
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1502143005

Cr-Commit-Position: refs/heads/master@{#32674}

infra/config/cq.cfg

@@ -40,18 +40,10 @@ verifiers {
       builders { name: "v8_linux_rel" }
       builders { name: "v8_mac_rel" }
       builders { name: "v8_presubmit" }
-      builders { name: "v8_win64_rel_ng" }
-      builders {
-        name: "v8_win64_rel_ng_triggered"
-        triggered_by: "v8_win64_rel_ng"
-      }
+      builders { name: "v8_win64_rel" }
       builders { name: "v8_win_compile_dbg" }
       builders { name: "v8_win_nosnap_shared_compile_rel" }
-      builders { name: "v8_win_rel_ng" }
-      builders {
-        name: "v8_win_rel_ng_triggered"
-        triggered_by: "v8_win_rel_ng"
-      }
+      builders { name: "v8_win_rel" }
     }
     buckets {
       name: "tryserver.blink"