By default in the Telerik Kendo Menu we have copy, paste, cut and merge. Is there a way to remove the "merge" option?
$(document).ready(function () {
var el = $('#mySpreadSheet');
var spreadsheet = el.getKendoSpreadsheet();
spreadsheet.cellContextMenu().remove("?merge?"); // ??

I post the answer given by telerik team as a ticket:
In order to remove the merge menuitem from the Kendo UI Spreadsheet's contextMenu, utilize the remove method with the specific selector:
Please take a look at the following Progress Kendo UI Dojo which demonstrates the above and let me know if you have any questions.