refactor: cleanup the code

nicko-core/dependency-reduced-pom.xml

@@ -78,10 +78,6 @@
       <id>spigot-repo</id>
       <url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
     </repository>
-    <repository>
-      <id>dmulloy2-repo</id>
-      <url>https://repo.dmulloy2.net/repository/public/</url>
-    </repository>
     <repository>
       <id>codemc-snapshots</id>
       <url>https://repo.codemc.io/repository/maven-snapshots/</url>
@@ -164,12 +160,6 @@
       <version>3.1.0</version>
       <scope>compile</scope>
     </dependency>
-    <dependency>
-      <groupId>com.comphenix.protocol</groupId>
-      <artifactId>ProtocolLib</artifactId>
-      <version>5.0.0-SNAPSHOT</version>
-      <scope>compile</scope>
-    </dependency>
   </dependencies>
   <properties>
     <maven.compiler.target>17</maven.compiler.target>

nicko-core/src/main/java/net/artelnatif/nicko/NickoBukkit.java

@@ -1,7 +1,5 @@
 package net.artelnatif.nicko;
 
-import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.ProtocolManager;
 import de.studiocode.invui.gui.structure.Structure;
 import de.studiocode.invui.item.builder.ItemBuilder;
 import de.studiocode.invui.item.impl.SimpleItem;
@@ -38,7 +36,6 @@ public class NickoBukkit extends JavaPlugin {
     private MojangAPI mojangAPI;
     private PlayerDataStore dataStore;
     private LocaleFileManager localeFileManager;
-    private ProtocolManager protocolManager;
 
     public NickoBukkit() { this.unitTesting = false; }
 
@@ -97,7 +94,6 @@ public class NickoBukkit extends JavaPlugin {
         saveDefaultConfig();
         config = new NickoConfiguration(this);
         dataStore = new PlayerDataStore(this);
-        protocolManager = ProtocolLibrary.getProtocolManager();
 
         getLogger().info("Loading internals...");
         if (getInternals() == null) {
@@ -167,10 +163,6 @@ public class NickoBukkit extends JavaPlugin {
         return localeFileManager;
     }
 
-    public ProtocolManager getProtocolManager() {
-        return protocolManager;
-    }
-
     public boolean isUnitTesting() {
         return unitTesting;
     }

nicko-core/src/main/java/net/artelnatif/nicko/impl/InternalsProtocolLib.java

@@ -1,10 +0,0 @@
-package net.artelnatif.nicko.impl;
-
-import com.comphenix.protocol.ProtocolManager;
-import net.artelnatif.nicko.NickoBukkit;
-
-public interface InternalsProtocolLib extends Internals {
-    default ProtocolManager getProtocolLib() {
-        return NickoBukkit.getInstance().getProtocolManager();
-    }
-}