Remove advance systems from the sponsor page

this domain name no longer resolves

Author: oalders

root/about/sponsors.tx

@@ -510,19 +510,6 @@ money...
           </p>
         </td>
       </tr>
-      <tr>
-        <td>
-          <a target="_blank" rel="noopener nofollow" href="https://advancesystemsinc.com/">
-            <img src="/static/images/sponsors/advance-systems.jpg">
-          </a>
-        </td>
-        <td>
-          <p>
-            Advance Systems is a premier provider of workforce software
-            solutions and supports MetaCPAN.
-          </p>
-        </td>
-      </tr>
       <tr>
         <td>
           <a target="_blank" rel="noopener nofollow" href="https://dealspotr.com/">