Clean up libyuv's codereview.settings

This is a trivial change intended to test libyuv's new CQ, but also
happens to be a nice cleanup, removal of dead entries, and sort of
the remaining entries.

Change-Id: I87cc228d3096fdf60b755ead6bd082757ce53262
Reviewed-on: https://chromium-review.googlesource.com/430992
Commit-Queue: Aaron Gable <agable@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@google.com>

codereview.settings

-# This file is used by gcl to get repository specific information.
+# This file is used by git cl to get repository specific information.
 CODE_REVIEW_SERVER: codereview.chromium.org
-#CC_LIST:
-VIEW_VC: https://chromium.googlesource.com/libyuv/libyuv/+/
-#STATUS:
-FORCE_HTTPS_COMMIT_URL: True
 PROJECT: libyuv
 TRY_ON_UPLOAD: False
-TRYSERVER_ROOT: src
-#GITCL_PREUPLOAD:
-#GITCL_PREDCOMMIT:
+VIEW_VC: https://chromium.googlesource.com/libyuv/libyuv/+/