utils: Remove unnecessary semicolons to reduce warnings

Change-Id: I8b8848e360cdbdc279ae7f3e64cf2bf50768d379

Author: JonnyKong

utils/topology/rocketfuel-map-reader.hpp

@@ -181,6 +181,6 @@ class RocketfuelMapReader : public AnnotatedTopologyReader {
   assignGw(Traits::vertex_descriptor vertex, uint32_t degree, node_type_t nodeType);
 }; // end class RocketfuelMapReader
 
-}; // end namespace ns3
+}  // end namespace ns3
 
 #endif /* ROCKETFUEL_MAP_READER_H */

utils/topology/rocketfuel-weights-reader.hpp

@@ -110,6 +110,6 @@ RocketfuelWeightsReader::GetDefaultQueue() const
   return m_queue;
 }
 
-}; // end namespace ns3
+}  // end namespace ns3
 
 #endif /* ROCKETFUEL_TOPOLOGY_WEIGHTS_READER_H */