interface-message-table-filter.js

javascript:
(function() {

	for (let index = 0; index < $("#interface-message-table")[0].children[0].children.length; index++) {
		const element = $("#interface-message-table")[0].children[0].children[index];
		const link = $(element.children[0]).find('a');
		if (link.length && !link[0].classList.contains('new')) {
			$(element).css('display', 'none');
		}
	}

}
)();