Map: remove width/height initialization from Setup

Author: torahappy

src/game_map.cpp

@@ -153,9 +153,6 @@ int Game_Map::GetMapSaveCount() {
 void Game_Map::Setup(std::unique_ptr<lcf::rpg::Map> map_in) {
 	Dispose();
 
-	screen_width = (Player::screen_width / 16.0) * SCREEN_TILE_SIZE;
-	screen_height = (Player::screen_height / 16.0) * SCREEN_TILE_SIZE;
-
 	map = std::move(map_in);
 
 	SetupCommon();