simplified getServerAddress method.

Author: Ryan

src/main/com/mongodb/DBCursor.java

@@ -678,9 +678,6 @@ public DBCollection getCollection(){
      * @return
      */
     public ServerAddress getServerAddress() {
-        if (_it != null && _it instanceof DBApiLayer.Result)
-            return ((DBApiLayer.Result)_it).getServerAddress();
-
         _check();
 
         if (_it != null && _it instanceof DBApiLayer.Result)