var url = _spPageContextInfo.webAbsoluteUrl + "/_api/SP.Web.DeleteAnonymousLinkForObject";
      console.log(url);
      $.ajax(
      {
          'url': url,
          'method': 'POST',
          'data': JSON.stringify({
             'url': _spPageContextInfo.webAbsoluteUrl + '/Shared Documents/test.txt',
             'isEditLink': true,
             'removeAssociatedSharingLinkGroup':true
          }),
          'headers': {
          'accept': 'application/json;odata=verbose',
          'content-type': 'application/json;odata=verbose',
          'X-RequestDigest': $('#__REQUESTDIGEST').val()
          },
          'success': function (data) {
                console.log(data);
                console.log("Success");
                //console.log(data.d.DeleteAnonymousLinkForObject);
          },
          'error': function (err) {
                console.log(JSON.stringify(err));
           }
      }
      );
     }