Remove presubmit bot from 'git cl try'.
Remove presubmit bot from 'git cl try'.

'git cl try' is often executed before an lgtm was given - in
this case the bot always fails.

TBR=jochen@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/820463004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26182}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh