Remove functions for free screen and player as they're unused

include/player.h

@@ -22,7 +22,6 @@ struct player_t
 };
 
 Player *playerCreate(Direction direction, int x, int y, int score);
-void playerFree(Player *player);
 
 bool playerCheckSelfCollision(Player *player);
 bool playerCheckFoodCollision(Player *player, Food food);

include/screen.h

@@ -12,8 +12,6 @@ typedef struct screen_t
 } Screen;
 
 Screen *screenCreate(int width, int height, Point fill_value);
-void screenFree(Screen *screen);
-
 void screenShow(Screen *screen);
 
 static inline Point *screenGetPoint(Screen *screen, int x, int y)

src/player.c

@@ -19,10 +19,6 @@ Player *playerCreate(Direction direction, int x, int y, int score)
     return player;
 }
 
-void playerFree(Player *player)
-{
-}
-
 bool playerCheckFoodCollision(Player *player, Food food)
 {
     for (PlayerNode *node = player->tail; node != NULL; node = node->next)

src/screen.c

@@ -15,12 +15,6 @@ Screen *screenCreate(int width, int height, Point fill_value)
     return out;
 }
 
-void screenFree(Screen *screen)
-{
-    free(screen->screen);
-    free(screen);
-}
-
 void screenShow(Screen *screen)
 {
     int x, y, i;