how to remove contact from Google contacts when email removed from google sheet using apps script

I have an Apps script when run:

reads Google sheet,adds new contact/s ( name and email) into Google Contacts,a duplicate is prevented to be entered into Google contacts as well.

However, I want when any contact email removed from the google sheet ( column B), the contact from Google Contacts to be removed as well(email and name).the spreadsheet has 3 columns:A: timestamp, B: email, C: name

Is anyone willing to help me with the script, please?I appreciate your help.

Here is what I got:

function myFunction11() {     var sheet = SpreadsheetApp.getActive().getSheetByName("sheet1");     //Iterate through your spreadsheet    for (var i = 0; i < sheet.getLastRow()-1; i++) {    var contactEmail = sheet.getRange(i+2,2,1,2).getValue();    var myContact = ContactsApp.getContact(contactEmail);      if (myContact === null){ ContactsApp.createContact(sheet.getRange(i+2,3,1,2).getValue(),"",sheet.getRange(i+2,2,1,2).getValue());   }   } }