How to remove https://s7.addthis.com/js/250 /addthis_widget.js script

How can I remove or delete the following script https://s7.addthis.com/js/250 /addthis_widget.js (there is much more) and the script is slowing down the site.

!function(e) {
    function t(n) {
        if (a[n])
            return a[n].exports;
        var i = a[n] = {
            exports: {},
            id: n,
            loaded: !1
        };
        return e[n].call(i.exports, i, i.exports, t),
        i.loaded = !0,
        i.exports
    }
    var n = window.atwpjp;
    window.atwpjp = function(a, o) {
        for (var r, s, d = 0, u = []; d < a.length; d++)
            s = a[d],
            i[s] && u.push.apply(u, i[s]),
            i[s] = 0;
        for (r in o)
            if (Object.prototype.hasOwnProperty.call(o, r)) {
                var c = o[r];
                switch (typeof c) {
                case "object":
                    e[r] = function(t) {
                        var n = t.slice(1)
                          , a = t[0];
                        return function(t, i, o) {

The script is slowing down the site speed.

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