Exclude offline bots from CQ config.

To unblock the CQ, let's remove these bots until they're
back.

BUG=chromium:550814
TBR=phoglund@webrtc.org

Review URL: https://codereview.webrtc.org/1420283013 .

Cr-Commit-Position: refs/heads/master@{#10489}
diff --git a/infra/config/cq.cfg b/infra/config/cq.cfg
index 80f6f60..0abcf67 100644
--- a/infra/config/cq.cfg
+++ b/infra/config/cq.cfg
@@ -26,9 +26,9 @@
   try_job {
     buckets {
       name: "tryserver.webrtc"
-      builders { name: "android_dbg" }
+      #builders { name: "android_dbg" }  # crbug.com/550814
       builders { name: "android_rel" }
-      builders { name: "android_arm64_rel" }
+      #builders { name: "android_arm64_rel" }  # crbug.com/550814
       builders { name: "android_clang_dbg" }
       builders { name: "android_gn_dbg" }
       builders { name: "android_gn_rel" }