Remove useless attribute rcol from finalclass

The rcol of finalclass is always 6, so there's no reason to have an
attribute there as if you could change it or anything.

desktop_version/src/Finalclass.h

@@ -12,7 +12,6 @@ public:
     const int* loadlevel(int rx, int ry);
 
     std::string roomname;
-    int rcol;
     bool warpx, warpy;
 };