Kill intsa link

Their site redirects to another site that no longer exists.

clubs/index.xml

@@ -34,7 +34,7 @@
     <li><a href="http://csclub.uwaterloo.ca/~glow/">GLOW</a></li>
     <li><a href="http://csclub.uwaterloo.ca/~hellenic/">Hellenic Students Assoctiation</a></li>
     <li><a href="http://csclub.uwaterloo.ca/~indsa/">Indian Students Association</a></li>
-    <li><a href="http://csclub.uwaterloo.ca/~intsa/">International Student Association</a></li>
+    <li>International Student Association <!-- http://csclub.uwaterloo.ca/~intsa/ --></li>
     <li><a href="http://csclub.uwaterloo.ca/~italian/">Patrimonio Italian Student's Association</a></li>
     <li><a href="http://www.jewishstudentsassociation.org/">Waterloo Region Jewish Students Association</a></li>
     <li><a href="http://konja.uwaterloo.ca">Konnichiwa Japan</a></li>