get page slug in function.php when page load in wordpress or remove JS for particular page

$page = get_page_by_path( 'login-register' );
$tmp = get_page_template_slug($page->ID); // provide page/post ID
if('custom-templates/login-register.php' == $tmp) {
// enqueue scripts here
add_filter( 'wpcf7_load_js', '__return_false' );
}