I have found a solution for this inconvenient.
first of all, remove all elements into Widget settings and Shortcode settings.
then, in the "iire_social_lite_widget.js" and "iire_social_lite_shortcode.js" change all "href" attribute calling with jquery to "data-href", and in the rendering of widget, in the div "icon" element, change "href" to "data-href".
In the creation of widget for iiRe social Lite, a jQuery function create the string with anchor element and the div with all information regarding the image to show for the social link. One of the attribute (href) will be change to "data-href" for a solution on validation with W3C Validator.