Fix javadoc errors.

Change-Id: Id047df5da4a15f8ebf3166156c2d5a692064a789

@@ -108,8 +108,6 @@ public class BgpCfgProvider extends AbstractProvider {
 
     /**
      * Reads the configuration and set it to the BGP-LS south bound protocol.
-     *
-     * @return void
      */
     private void readConfiguration() {
         BgpCfg bgpConfig = null;

@@ -170,7 +170,6 @@ public class FlowObjectiveWebResource extends AbstractWebResource {
      * Installs the filtering rules onto the specified device.
      *
      * @param stream filtering rule JSON
-     * @return status of the request
      * @onos.rsModel ObjectivePolicy
      */
     @POST