Remove git-crsync

Revision 51049267 removed git-crup which
orphaned git-crsync whose only purpose in life is to invoke git-crup.

Change-Id: Ic8594150692106d8c6326004adea8ce2977f221d
Reviewed-on: https://chromium-review.googlesource.com/c/1262117Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Asanka Herath <asanka@chromium.org>

git-crsync

-#!/usr/bin/env bash
-
-. git-crup