Remove chromeos-amd64-generic-rel from CQ

The bot is broken at the moment.

NOTRY=true

Bug: 902806
Change-Id: I1ee551c95617444e5ec4edbdb3d8d4fde6d7dc5f
Reviewed-on: https://chromium-review.googlesource.com/c/1324090
Commit-Queue: Stephen Martinis <martiniss@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606093}

infra/config/branch/cq.cfg

@@ -52,7 +52,8 @@ verifiers {
       }
       builders { name: "cast_shell_android" }
       builders { name: "cast_shell_linux" }
-      builders { name: "chromeos-amd64-generic-rel" }
+      # TODO(martiniss): Re-add to CQ once bot has recovered.
+      # builders { name: "chromeos-amd64-generic-rel" }
       builders { name: "chromeos-daisy-rel" }
       builders {
         name: "chromium_presubmit"