refactor: removed unused and outdated code

Mage.Server/src/main/java/mage/server/challenge/ChallengeManager.java

@@ -1,25 +0,0 @@
-package mage.server.challenge;
-
-import mage.constants.Zone;
-import mage.game.match.Match;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
-
-/**
- * C U R R E N T L Y    U N U S E D 
- *
- * Loads challenges from scenarios.
- * Configure games by initializing starting game board.
- */
-public enum ChallengeManager {
-
-    instance;
-
-    public void prepareChallenge(UUID playerId, Match match) {
-        Map<Zone, String> commands = new HashMap<>();
-        commands.put(Zone.OUTSIDE, "life:3");
-        match.getGame().cheat(playerId, commands);
-    }
-}

Mage.Server/src/main/java/mage/server/exceptions/UserNotFoundException.java

@@ -1,7 +0,0 @@
-package mage.server.exceptions;
-
-/**
- * Created by igoudt on 14-1-2017.
- */
-public class UserNotFoundException extends Exception {
-}

Mage.Server/src/main/java/mage/server/managers/ChatManager.java

@@ -3,7 +3,6 @@ package mage.server.managers;
 import mage.game.Game;
 import mage.server.ChatSession;
 import mage.server.DisconnectReason;
-import mage.server.exceptions.UserNotFoundException;
 import mage.view.ChatMessage;
 
 import java.util.List;

Mage.Server/src/main/java/mage/server/services/LogService.java

@@ -1,18 +0,0 @@
-package mage.server.services;
-
-/**
- * Responsible for gathering logs and storing them in DB.
- *
- * @author noxx
- */
-@FunctionalInterface
-public interface LogService {
-
-    /**
-     * Logs any information
-     *
-     * @param key Log key. Should be the same for the same types of logs.
-     * @param args Any parameters in string representation.
-     */
-    void log(String key, String... args);
-}

Mage.Server/src/main/java/mage/server/services/MageService.java

@@ -1,18 +0,0 @@
-package mage.server.services;
-
-/**
- * Common interface for all services.
- *
- * @author noxx
- */
-public interface MageService {
-    /**
-     * Restores data on startup.
-     */
-    void initService();
-
-    /**
-     * Dumps data to DB.
-     */
-    void saveData();
-}