Delete all google calendar events in a range

delete_calendar_events.gs

function myFunction() {
  var fromDate = new Date(2017,8,1,0,0,0);
  var toDate = new Date(2017,8,16,0,0,0);
  
  // delete from Sept 1 through Sept 15, 2017
  
  var calendar = CalendarApp.getCalendarsByName('NateSchultz')[0];
  var events = calendar.getEvents(fromDate, toDate);
  for(var i=0; i<events.length;i++){
    var ev = events[i];
    Logger.log(ev.getTitle()); // show event name in log
    ev.deleteEvent();
  }
}

Run online at https://script.google.com/macros/
Rename calendar name to match.