Modified main menu to be able to override the current game with a new one

dungeonbattle/display/mapdisplay.py

@@ -1,11 +1,9 @@
 #!/usr/bin/env python
-from dungeonbattle.entities.player import Player
 from dungeonbattle.interfaces import Map
 from .display import Display
 
 
 class MapDisplay(Display):
-    player: Player
 
     def __init__(self, *args):
         super().__init__(*args)