Fix style issues.

extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/ConnectionDirectory.java

@@ -38,7 +38,6 @@ package net.sourceforge.guacamole.net.auth.mysql;
  * ***** END LICENSE BLOCK ***** */
 
 import com.google.inject.Inject;
-import java.util.List;
 import java.util.Set;
 import net.sourceforge.guacamole.GuacamoleClientException;
 import net.sourceforge.guacamole.GuacamoleException;

extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/UserDirectory.java

@@ -485,6 +485,8 @@ public class UserDirectory implements Directory<String, net.sourceforge.guacamol
      * @param user_id The ID of the user whose permissions should be updated.
      * @param permissions The new system permissions that the given user should
      *                    have when this operation completes.
+     * @throws GuacamoleException If permission to administer system permissions
+     *                            is denied.
      */
     private void createSystemPermissions(int user_id,
             Collection<SystemPermission> permissions) throws GuacamoleException {