I am so new to the world of API calling and apparently there is a script called in post API that is not letting me call them properly please see this link:

/?app=3

How can I remove this script tag from this file?

<script type="text/javascript">
            window._nslDOMReady = function (callback) {
                if ( document.readyState === "complete" || document.readyState === "interactive" ) {
                    callback();
                } else {
                    document.addEventListener( "DOMContentLoaded", callback );
                }
            };
            </script><script type='text/javascript' src='.min.js?ver=3.6.0' id='jquery-core-js'></script>
<script type='text/javascript' src='.min.js?ver=3.3.2' id='jquery-migrate-js'></script>