Remove reclient from buildtools/DEPS

This is already in chrome's DEPS file, and nothing else uses this yet.
So this should be safe to remove.

Bug: 1177288
Change-Id: I00e6476ad0eb0e44625465bca73da5eaddb63d14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2722571
Auto-Submit: Nico Weber <thakis@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#858169}
GitOrigin-RevId: 332332a9803a05a540a152f9b4af8c3d0a9ccbad
1 file changed