feat: added unregister by node name

src/main/java/com/mojang/brigadier/CommandDispatcher.java

@@ -100,12 +100,21 @@ public class CommandDispatcher<S> {
     }
 
 	/**
-	* Utility method from unregister a command
+	* This method unregisteres a previously declared command
 	*
-	* @param command node from register function
+	* @param The name of the command to remove
+	*/
+	public void unregister(final String name) {
+		this.root.removeChild(name);
+	}
+
+	/**
+	* This method unregisteres a previously declared command
+	*
+	* @param An previously added node
 	*/
 	public void unregister(final LiteralCommandNode<S> node) {
-		this.root.removeChild(node);
+		this.unregister(node.getName());
 	}
 
     /**

src/main/java/com/mojang/brigadier/tree/CommandNode.java

@@ -89,9 +89,7 @@ public abstract class CommandNode<S> implements Comparable<CommandNode<S>> {
         }
     }
 
-	public void removeChild(final CommandNode<S> node) {
+	public void removeChild(String name) {
-		String name = node.getName();
-
 		this.children.remove(name);
 		this.literals.remove(name);
 		this.arguments.remove(name);