Remove `getMediaServer()` from `ofxPiMapper` root class as it is not used anywhere

src/ofxPiMapper.cpp

@@ -61,10 +61,6 @@ ofx::piMapper::SurfaceManagerGui & ofxPiMapper::getGui(){
 	return gui;
 }
 
-ofx::piMapper::MediaServer * ofxPiMapper::getMediaServer(){
-	return _mediaServer;
-}
-
 ofx::piMapper::SurfaceManager & ofxPiMapper::getSurfaceManager(){
 	return surfaceManager;
 }

src/ofxPiMapper.h

@@ -32,7 +32,6 @@ class ofxPiMapper {
 
 		ofx::piMapper::CmdManager & getCmdManager();
 		ofx::piMapper::SurfaceManagerGui & getGui();
-		ofx::piMapper::MediaServer * getMediaServer();
 		ofx::piMapper::SurfaceManager & getSurfaceManager();
 		ofx::piMapper::CmdManager cmdManager;
 		ofx::piMapper::SurfaceManager surfaceManager;