Remove empty texture warnings in surface drawing methods

src/Surfaces/QuadSurface.cpp

@@ -71,7 +71,6 @@ void QuadSurface::setup(ofVec2f p1, ofVec2f p2, ofVec2f p3, ofVec2f p4,
 
 void QuadSurface::draw(){
 	if(source->getTexture() == 0){
-		ofLogWarning("QuadSurface") << "Source texture empty. Not drawing.";
 		return;
 	}
 	

src/Surfaces/TriangleSurface.cpp

@@ -44,7 +44,6 @@ void TriangleSurface::setup(ofVec2f p1, ofVec2f p2, ofVec2f p3, ofVec2f t1,
 
 void TriangleSurface::draw(){
 	if(source->getTexture() == 0){
-		ofLogWarning("TriangleSurface") << "Source texture is empty. Not drawing.";
 		return;
 	}