Simple Editor tool (place in an /Editor folder) to unparent gameobjects in the hierarchy

UnparentGameObject.cs

using UnityEditor;

namespace PixelWizards.Utilities
{
    public class UnparentGameObject
    {
        [MenuItem("Edit/Unparent GameObject", false, 0)]
        static void UnparentGO()
        {
            var selection = Selection.activeTransform;
            if (selection != null)
            {
                selection.parent = null;
            }
        }

        [MenuItem("Edit/Unparent GameObject", true, 0)]
        static bool ValidateUnparentGO()
        {
            // Return false if no transform is selected.
            return Selection.activeTransform != null;
        }
    }
}

forgot to make the validation function...a validation function - updated ;}