Remove custom.css and custom fonts

def reset_default(verbose=False):
    """Remove custom.css and custom fonts"""
    paths = [jupyter_custom, jupyter_nbext]

    for fpath in paths:
        custom = '{0}{1}{2}.css'.format(fpath, os.sep, 'custom')
        try:
            os.remove(custom)
        except Exception:
            pass
    try:
        delete_font_files()
    except Exception:
        check_directories()
        delete_font_files()

    copyfile(defaultCSS, jupyter_customcss)
    copyfile(defaultJS, jupyter_customjs)

    if os.path.exists(theme_name_file):
        os.remove(theme_name_file)

    if verbose:
        print("Reset css and font defaults in:\n{} &\n{}".format(*paths))