fix removeOnlinePlayer no thread safe

src/main/java/org/sculk/Server.java

@@ -51,6 +51,7 @@
 import java.nio.file.Paths;
 import java.util.*;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
 
 import static org.sculk.Sculk.CODE_NAME;
 import static org.sculk.Sculk.CODE_VERSION;
@@ -95,8 +96,7 @@ public class Server {
     private final Config banByName;
     private final Config banByIp;
 
-    private final Map<UUID, Player> playerList = new HashMap<>();
-    private final Map<SocketAddress, Player> players = new HashMap<>();
+    private final Map<UUID, Player> playerList = new ConcurrentHashMap<>();
 
     @Getter
     private String motd;
@@ -238,7 +238,6 @@ public CompletableFuture<Player> createPlayer(SculkServerSession session, Client
             try {
                 Constructor<? extends Player> constructor = clazz.getConstructor(Server.class, SculkServerSession.class, ClientChainData.class, NbtMap.class);
                 player = constructor.newInstance(this, session, info, NbtMap.EMPTY);
-                this.addPlayer(session.getSocketAddress(), player);
             } catch (NoSuchMethodException | InvocationTargetException | InstantiationException | IllegalAccessException e) {
                 this.logger.warn(FAILED_TO_CREATE_PLAYER, e);
                 throw new RuntimeException(e);
@@ -258,12 +257,6 @@ private Path createDirectories(String dataPath, String... directories) {
         return Path.of(dataPath, directories[0]);
     }
 
-    public void broadcastPacket(BedrockPacket packet) {
-        for (Player player : this.players.values()) {
-            player.sendDataPacket(packet);
-        }
-    }
-
     public EventManager getEventManager() {
         return eventManager;
     }
@@ -347,10 +340,6 @@ public Operators getOperators() {
         return this.operators;
     }
 
-    public void addPlayer(SocketAddress socketAddress, Player player) {
-        this.players.put(socketAddress, player);
-    }
-
     public boolean addOnlinePlayer(Player player) {
         PlayerLoginEvent event = new PlayerLoginEvent(player, "Plugin reason");
         event.call();