Removed Entity::qPitch/Yaw/Roll

These were protected, and grep revealed they were not used anywhere.

Core/Contents/Include/PolyEntity.h

@@ -674,13 +674,9 @@ namespace Polycode {
 			Vector3 _position;
 			Vector3 _scale;		
 			Rotation _rotation;
-			
-			Quaternion qYaw;
-			Quaternion qPitch;
-			Quaternion qRoll;			
+	
 			Quaternion rotationQuat;
 			
-			
 			bool lockMatrix;
 			bool matrixDirty;
 			Matrix4 transformMatrix;