Remove version of CSS and JS from url in Wordpress
function wp_remove_file_version( $src ) {
if( strpos( $src, '?ver=' ) )
$src = remove_query_arg( 'ver', $src );
return $src;
}
add_filter( 'style_loader_src', 'wp_remove_file_version', 10, 2 );
add_filter( 'script_loader_src', 'wp_remove_file_version', 10, 2 );