Open XML: Delete entire excel column using column index

I have got column index for an excel column in a spreadsheet and need to delete the entire column using this column index. I am confined to use Open XML SDK 2.0.

using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;

namespace openXMLDemo
{
    public class Program
    {
        public static void Main(string[] args)
        {
            string fileFullPath = @"path to the excel file here";
            string sheetName = "excelsheet name here";

            using (SpreadsheetDocument document = SpreadsheetDocument.Open(fileFullPath, true))
            {
                Sheet sheet = document.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>().Where(s => s.Name == sheetName).FirstOrDefault();
                if (sheet != null)
                {
                    WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(sheet.Id.Value);

                    // This is where I am struggling.... 
                    // finding the reference to entire column with the use of column index
                    Column columnToDelete = sheet.GetFirstChild<SheetData>().Elements<Column>()
                }
            }
        }
    }    
}