Remove specific tag from string.

var data = '<p><span class="unwanted-span-one" data-hello="unwated-attr">Donec</span> rutrum congue leo eget malesuada. <span>Mauris</span> blandit aliquet elit, eget <span class="unwanted-span-two" data-hello="unwated-attr-two"> malesuada</span>.</p...