JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
		<li>
			<input name="tablefilter" type="checkbox" value="Finspång" id="tablefilter1" checked="">Finspång
		</li>
		<li>
			<input name="tablefilter" type="checkbox" value="Linköping" id="tablefilter1" checked="">Linköping
		</li>
		<li hidden >
			<input name="tablefilter" type="checkbox" value="Linköping" id="tablefilter1" checked="">Linköping
		</li>
	</ul>

JavaScript

var seen = {};
	$('input').each(function() {
		var txt = $(this).text();
		if (seen[txt])
			$(this).remove();
		else
			seen[txt] = true;
	});