Delete unneeded test.

tests/upstream.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.
-
-# Check guessing the svn upstream branch.
-
-set -e
-
-. ./test-lib.sh
-
-setup_initsvn
-setup_gitsvn
-
-(
-  set -e
-  cd git-svn
-
-  git config rietveld.server localhost:10000
-
-  for ref in refs/remotes/origin/trunk refs/remotes/origin/some_branch; do
-    git branch -f --set-upstream feature_branch $ref
-    git checkout -q feature_branch
-    test_expect_success "Guessing upstream branch for $ref" \
-        "$GIT_CL upstream | egrep -q '^$ref$'"
-    git checkout -q master
-  done
-)
-
-SUCCESS=$?
-
-cleanup
-
-if [ $SUCCESS == 0 ]; then
-  echo PASS
-fi