The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/toolchain-utils/+/f763d91e62e9a3099be2bf55103ca40c942672b8

commit f763d91e62e9a3099be2bf55103ca40c942672b8
Author: Caroline Tice <cmtice@google.com>
Date: Tue Apr 17 04:26:49 2018

[toolchain-utils] Remove --remote-description flag.

The cros tryjob command no longer recognizes this flag so we need
to remove it from our scripts.

BUG= chromium:833542 
TEST=Tested with launching the rotating builders on chrotomation2.

Change-Id: Ifcf62ae7073d84a9f58e12c29dcce5cdf9108e9f
Reviewed-on: https://chromium-review.googlesource.com/1014369
Commit-Ready: Caroline Tice <cmtice@chromium.org>
Tested-by: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>

[modify] https://crrev.com/f763d91e62e9a3099be2bf55103ca40c942672b8/cros_utils/buildbot_utils.py
[modify] https://crrev.com/f763d91e62e9a3099be2bf55103ca40c942672b8/buildbot_test_toolchains.py
[modify] https://crrev.com/f763d91e62e9a3099be2bf55103ca40c942672b8/buildbot_test_llvm.py
[modify] https://crrev.com/f763d91e62e9a3099be2bf55103ca40c942672b8/cros_utils/buildbot_utils_unittest.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/toolchain-utils/+/efb79904d9a4b9749e9510bd35fbeeb6bf9d401e

commit efb79904d9a4b9749e9510bd35fbeeb6bf9d401e
Author: Caroline Tice <cmtice@google.com>
Date: Thu Apr 19 05:31:10 2018

[toolchain-utils] Remove one last description reference.

Previous CL, removing '--remote-description' flag, missed two
uses which this CL deletes.

BUG= chromium:833542 
TEST=In progress.

Change-Id: I37d06e12af815e063d2cd0bac71737356cdd15a5
Reviewed-on: https://chromium-review.googlesource.com/1017909
Commit-Ready: Caroline Tice <cmtice@chromium.org>
Tested-by: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>

[modify] https://crrev.com/efb79904d9a4b9749e9510bd35fbeeb6bf9d401e/cros_utils/buildbot_utils.py
[modify] https://crrev.com/efb79904d9a4b9749e9510bd35fbeeb6bf9d401e/buildbot_test_toolchains.py