chore: code cleanup for sonarlint

Author: rexlManu

src/main/java/de/rexlmanu/fairychat/plugin/Constants.java

@@ -3,6 +3,9 @@
 import java.util.UUID;
 
 public class Constants {
+  private Constants() {
+    throw new UnsupportedOperationException();
+  }
   /*
    * The server id is used to identify the server in the redis network.
    */

src/main/java/de/rexlmanu/fairychat/plugin/module/CommandModule.java

@@ -37,12 +37,6 @@ public final CommandManager<CommandSender> provideCommandManager(
           .parameterInjectorRegistry()
           .registerInjectionService(context -> injector.getInstance(context.getSecond()));
 
-      //      new MinecraftExceptionHandler<CommandSender>()
-      //          .withHandler(MinecraftExceptionHandler.ExceptionType.NO_PERMISSION,
-      //              e -> Component.text("You don't have permission to do this!")
-      //                  .style(builder -> builder.color(NamedTextColor.RED)))
-      //          .apply(commandManager, sender -> sender);
-
       return commandManager;
     } catch (Exception e) {
       throw new RuntimeException("Failed to initialize the CommandManager");