bring my copy up to date

Marlin/src/lcd/menu/menu_game.cpp

@@ -46,4 +46,3 @@ void menu_game() {
 }
 
 #endif // HAS_GAME_MENU
-

Marlin/src/lcd/menu/menu_main.cpp

@@ -136,16 +136,6 @@ void menu_led();
   #endif
 #endif
 
-#if HAS_GAME_MENU
-  void menu_game();
-#elif ENABLED(MARLIN_BRICKOUT)
-  void lcd_goto_brickout();
-#elif ENABLED(MARLIN_INVADERS)
-  void lcd_goto_invaders();
-#elif ENABLED(MARLIN_SNAKE)
-  void lcd_goto_snake();
-#endif
-
 void menu_main() {
   START_MENU();
   MENU_BACK(MSG_WATCH);