Remove SVN (and dcommit) support from git-cl

tests/rename.sh

-#!/usr/bin/env bash
-
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# Renaming a file should show up as a rename in the review.
-
-set -e
-
-. ./test-lib.sh
-
-setup_initsvn
-setup_gitsvn
-
-(
-  set -e
-  cd git-svn
-  git config rietveld.server localhost:10000
-
-  # Create a branch, rename a file, upload it.
-  git checkout -q -b rename
-  git mv test test2
-  git commit -q -m "renamed"
-  export GIT_EDITOR=$(which true)
-  test_expect_success "upload succeeds" \
-    "$GIT_CL upload --no-oauth2 -m test master | grep -q 'Issue created'"
-
-  # Look at the uploaded patch and verify it is a rename patch.
-  echo "Rename test not fully implemented yet.  :("
-  exit 1
-)
-
-SUCCESS=$?
-
-cleanup
-
-if [ $SUCCESS == 0 ]; then
-  echo PASS
-fi