refactor: removed deprecated checksum

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/GameInstance.java

@@ -28,23 +28,6 @@ public class GameInstance {
         manager = new GameStateManager(_state);
     }
 
-    /**
-     * Checks a checksum with the current one.
-     * @param input The checksum to compare to
-     * @return Whether or not the checksum matches
-     */
-    public boolean checkChecksum(long input) {
-        return ChecksumCalculator.checkChecksum(_state, input);
-    }
-
-    /**
-     * Calculates the current checksum of the game state.
-     * @return The calculated checksum
-     */
-    public long calculateChecksum() {
-        return ChecksumCalculator.calculateChecksum(_state);
-    }
-
     /**
      * Checks an array of {@link Request}s for validity and automatically applies them if valid.
      * @param requests The requests to check