Triggering remove event of kendo upload on click of button is not working

I want to remove selected file of kendo upload control on click event of another button and I followed the below link Triggering OnCancel event of kendo upload on click of button the remove event fired but not clear the file below is my code. please can any one help me what i am doing wrong.

$(document).ready(function () {
        $("#files").kendoUpload({
            "multiple": false,
            select: function (event) {
                console.log(event);
                var notAllowed = false;
                $.each(event.files, function (index, value) {
                    if ((value.extension).toLowerCase() !== '.jpg') {
                        alert("not allowed! only jpg files!");
                        notAllowed = true;
                    }
                    else if (value.size > 3000000) {
                        alert("file size must less than 3MB ");
                        notAllowed = true;
                    }
                    if (event.files.length > 1) {
                        alert("Please select single file.");
                        e.preventDefault();
                    }
                });

                var breakPoint = 0;
                if (notAllowed == true) event.preventDefault();
                var fileReader = new FileReader();
                fileReader.onload = function (event) {

                    var mapImage = event.target.result;
                    $("#sigimage").attr('src', mapImage);
                    document.getElementById("sigimage").style.display = 'block';


                }
                fileReader.readAsDataURL(event.files[0].rawFile);

            },
                remove: function (e) {
                    alert("remove");
                    e.preventDefault();
                },

        });
        $("#closewindow").click(function (e) {
            $("#files").data("kendoUpload").trigger("remove");
        });
    });