title: Delete calendar event in google calendar ics file
body: <p>I am creating calendar event ics file with <strong>PUBLISH</strong> method and sending that attachment in the email. When receiving in email there is option  for adding event to <strong>Add to calendar</strong> which will add event in the calendar.
  For deleting calendar event i am sending delete calendar as an attachment in the email.</p>
  
  <p>Code for <strong>creating calendar event</strong></p>
  
  <pre><code>BEGIN:VCALENDAR
  VERSION:2.0
  PRODID://Company//Company Calendar 1.0//EN
  METHOD:PUBLISH
  BEGIN:VEVENT
  UID:lAdYuWyFqwyopPjAAA123
  DTSTAMP:2020-02-03T05:04:52.793ZZ
  DTSTART;TZID=Asia/Calcutta:20200204T100000
  DTEND;TZID=Asia/Calcutta:20200204T100000
  SUMMARY:Play cricket
  DESCRIPTION:Description of the event
  SEQUENCE:0
  CATEGORIES:Sports
  ORGANIZER;CN=Admin:mailto:abc@test.com
  END:VEVENT
  END:VCALENDAR
  </code></pre>
  
  <p>Code for <strong>deleting calendar event</strong></p>
  
  <pre><code>BEGIN:VCALENDAR
  VERSION:2.0
  PRODID://Company//Company Calendar 1.0//EN
  METHOD:CANCEL
  BEGIN:VEVENT
  UID:lAdYuWyFqwyopPjAAA123
  DTSTAMP:2020-02-03T05:04:52.793ZZ
  DTSTART;TZID=Asia/Calcutta:20200204T100000
  DTEND;TZID=Asia/Calcutta:20200204T100000
  SUMMARY:Play cricket
  DESCRIPTION:Description of the event
  CATEGORIES:Sports
  ORGANIZER;CN=Admin:mailto:abc@test.com
  STATUS:CANCELLED
  SEQUENCE:1
  TRANSP:OPAQUE
  END:VEVENT
  END:VCALENDAR
  </code></pre>
  
  <p>It is working when email is send in the outlook it is automatically cancelling the event when deleting event ics file is received in the email. It is striking the event in outlook calendar.</p>
  
  <p>But when i am checking with gmail it is not removing event when delete event is received. After delete event is received in the email google calendar shows same event over there.</p>
  
  <p>I only want to use <strong>PUBLISH</strong> method while creating event. <strong>Don't</strong> want use <strong>REQUEST</strong> method while creating event using ics file as it will create unnecessary <strong>RVSP</strong> option.</p>
  
  <p>I have tried to keep sequence same that also didn't work. Even it tried adding <strong>X-WR-RELCALID</strong> this parameter even this was also not working.</p>