Cleanup some garden-o-matic cruft and dead code.

Tools/GardeningServer/styles/onebar.css

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 39 matching lines @@
 
 #unexpected {
     min-height: 550px;
     padding: 0 8px;
 }
 
 #onebar.partytime #unexpected {
     background: url(../images/partytime.gif) center center no-repeat;
 }
 
-#chromium-gtests iframe {
-    border: 0;
-    height: 20px;
-}
-
-#chromium-gtests {
-    position: absolute;
-    top: 10px;
-    right: 5px;
-}
-
-#gtest-label {
-    vertical-align: top;
-}
-
 #link-handling {
     position: absolute;
     top: 10px;
     right: 0;
     padding-right: 4px;
 }
 
 /* This checkbox just overlaps the main content on smalls screens and doesn't
 make a lot of sense as currently designed.*/
 @media only screen and (max-width: 400px) {
@@ skipping 32 matching lines @@
 .topbar {
     display: flex;
     align-items: center;
 }
 
 .treestatus {
     display: inline-block;
     margin: 4px;
     font-size: 11px;
 }