Remove kludge_to_bg() and bg_to_kludge()

Now that tower, title, and horizontal/veritcal warp backgrounds all use
separate buffers, there's no longer any need to temporarily store
variables as a workaround for the buffers stepping on each other.

desktop_version/src/Game.cpp

@@ -7232,7 +7232,6 @@ void Game::returntopausemenu()
     ingame_titlemode = false;
     returntomenu(kludge_ingametemp);
     gamestate = MAPMODE;
-    map.kludge_to_bg();
     graphics.titlebg.tdrawback = true;
     graphics.backgrounddrawn = false;
     mapheld = true;

desktop_version/src/Input.cpp

@@ -2379,7 +2379,6 @@ void mapmenuactionpress()
         {
             game.createmenu(Menu::options);
         }
-        map.bg_to_kludge();
         game.kludge_ingametemp = game.currentmenuname;
 
         graphics.titlebg.scrolldir = 0;

desktop_version/src/Map.cpp

@@ -87,9 +87,6 @@ mapclass::mapclass()
 	cameraseek = 0;
 	minitowermode = false;
 	roomtexton = false;
-	kludge_bypos = 0;
-	kludge_colstate = 0;
-	kludge_scrolldir = 0;
 }
 
 //Areamap starts at 100,100 and extends 20x20
@@ -2109,17 +2106,3 @@ void mapclass::twoframedelayfix()
 		script.dontrunnextframe = true;
 	}
 }
-
-void mapclass::bg_to_kludge()
-{
-	kludge_bypos = graphics.towerbg.bypos;
-	kludge_colstate = graphics.towerbg.colstate;
-	kludge_scrolldir = graphics.towerbg.scrolldir;
-}
-
-void mapclass::kludge_to_bg()
-{
-	graphics.towerbg.bypos = kludge_bypos;
-	graphics.towerbg.colstate = kludge_colstate;
-	graphics.towerbg.scrolldir = kludge_scrolldir;
-}

desktop_version/src/Map.h

@@ -165,12 +165,6 @@ public:
 
     //Map cursor
     int cursorstate, cursordelay;
-
-    int kludge_bypos;
-    int kludge_colstate;
-    int kludge_scrolldir;
-    void bg_to_kludge();
-    void kludge_to_bg();
 };
 
 #ifndef MAP_DEFINITION