Removed one lambda

Not supported on ground station compiler

groundStation/src/vrpn_tracker.cpp

@@ -89,10 +89,9 @@ namespace microcart
 		trackerData.fps = 1.0 / elapsed_time_usec;
 
 		auto td = trackerData;
-		std::for_each(cb_vector.begin(), cb_vector.end(),
-			[td](std::function<void(const TrackerData &)> &fn){
-				fn(td);
-		});
+		for(auto i = cb_vector.begin(); i != cb_vector.end(); ++i) {
+			(*i)(td);
+		}
 	}
 
 	void Tracker::addCallback(std::function<void(const TrackerData&)> cb)