Removed tryserver.chromium.gpu and related references

masters/master.chromium/templates/announce.html

 {% extends "layout.html" %}
 {% from "tree_status.html" import treestatus %}
 
 {% block header -%}
 {{ super() }}
 <hr/>
 <script>
   /**
    * Pseudo namespace for chromium - keep it short because we are in a very
    * narrow scope for this file.
@@ skipping 195 matching lines @@
               <script src='https://chromium-build.appspot.com/p/chromium/trooper.js'></script>
             </td>
           </tr>
           <tr>
             <td style="text-align: right;">
                <b>Masters:</b>
             </td>
             <td colspan="2">
               <script>
               document.write([
-                a("../tryserver.chromium.gpu/waterfall", "tryserver.chromium.gpu", ""),
                 a("../tryserver.chromium.linux/waterfall", "tryserver.chromium.linux", ""),
                 a("../tryserver.chromium.mac/waterfall", "tryserver.chromium.mac", ""),
                 a("../tryserver.chromium.win/waterfall", "tryserver.chromium.win", ""),
                 a("../tryserver.blink/waterfall", "tryserver.blink", ""),
                 aView("../chromium.fyi", "", "chromium.fyi"),
                 aView("../chromium.memory", "", "chromium.memory"),
                 aView("../chromium.memory.fyi", "", "chromium.memory.fyi"),
                 aView("../chromium.chromiumos", "", "chromium.chromiumos"),
                 aView("../chromiumos", "", "chromiumos"),
                 aView("../client.nacl", "", "client.nacl"),
@@ skipping 262 matching lines @@
 </center>
 
 </div>
 {% endblock header %}
 
 {% block footer %}
 
 {{ super() }}
 {# <p>Debug info: {{ debuginfo }}</p> #}
 {% endblock %}