Throw error on remove from red-black tree.

src/data-structures/tree/red-black-tree/RedBlackTree.js

@@ -32,6 +32,14 @@ export default class RedBlackTree extends BinarySearchTree {
     return insertedNode;
   }
 
+  /**
+   * @param {*} value
+   * @return {BinarySearchTreeNode}
+   */
+  remove(value) {
+    throw new Error(`Can't remove ${value}. Remove method is not implemented yet`);
+  }
+
   /**
    * @param {BinarySearchTreeNode} node
    */

src/data-structures/tree/red-black-tree/__test__/RedBlackTree.test.js

@@ -311,4 +311,14 @@ describe('RedBlackTree', () => {
     expect(tree.toString()).toBe('15,17,19,20,25');
     expect(tree.root.height).toBe(2);
   });
+
+  it('should throw an error when trying to remove node', () => {
+    const removeNodeFromRedBlackTree = () => {
+      const tree = new RedBlackTree();
+
+      tree.remove(1);
+    };
+
+    expect(removeNodeFromRedBlackTree).toThrowError();
+  });
 });