GUACAMOLE-1120: Merge removal of CAS extension resources that no longer exist.

diff --git a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
index e34c3a6..dfee2f8 100644
--- a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
@@ -14,18 +14,6 @@
         "translations/en.json",
         "translations/ja.json",
         "translations/ru.json"
-    ],
-
-    "js" : [
-        "cas.min.js"
-    ],
-
-    "css" : [
-        "cas.min.css"
-    ],
-
-    "resources" : {
-        "templates/casTicketField.html" : "text/html"
-    }
+    ]
 
 }