Bug 1185982 - Remove the unused NotifyNetworkActivity::mObs member; r=bagder

netwerk/base/NetworkActivityMonitor.cpp

@@ -170,7 +170,6 @@ public:
     return NS_OK;
   }
 private:
-  nsCOMPtr<nsIObserverService>      mObs;
   NetworkActivityMonitor::Direction mDirection;
 };