How to remove data validations?

Question

I want to remove all data validations from a sheet, tried following but it does not get rid of them. Anyway to do this through apps script?

var ss = SpreadsheetApp.getActiveSpreadsheet();
var accountSheet = ss.getSheetByName("Account A");
accountSheet.getRange(1,1,274,61).clear();

Answer 1

accountSheet.getRange(1,1,274,61).setDataValidation(null)

That should do the job.