Remove incorrect comment about glassfish repository

Author: MarkEWaite

pom.xml

@@ -110,7 +110,6 @@
     </dependencies>
   </dependencyManagement>
 
-  <!-- get every artifact through maven.glassfish.org, which proxies all the artifacts that we need -->
   <repositories>
     <repository>
       <id>repo.jenkins-ci.org</id>