Remove GardeningServer.

Tools/GardeningServer/ui/test/ct-builder-tests.html

-<!--
-Copyright 2014 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.
--->
-
-<link rel="import" href="../ct-builder.html">
-
-<script>
-(function () {
-
-var assert = chai.assert;
-
-describe('ct-builder', function() {
-  describe('default builder UI', function() {
-    it('should link to builder', function(done) {
-      var masterUrl = 'https://url';
-      var builderName = 'WebKit Linux (dbg)';
-
-      var builder = document.createElement('ct-builder');
-      builder.builder = new CTBuilder(masterUrl, builderName, 1);
-
-      setTimeout(function() {
-        var a = builder.shadowRoot.querySelector('a');
-        assert.ok(a);
-        assert(a.href.startsWith(masterUrl));
-        assert.include(a.href, encodeURIComponent(builderName));
-
-        done();
-      });
-    });
-  });
-});
-
-})()
-</script>