Removes User from selected Channel.
List of channels for a given user
Removes User from selected Channel.
DELETE
/v2/Services/{ServiceSid}/Users/{UserSid}/Channels/{ChannelSid}
curl \
--request DELETE 'https://chat.twilio.com/v2/Services/{ServiceSid}/Users/{UserSid}/Channels/{ChannelSid}' \
--user "username:password" \
--header "X-Twilio-Webhook-Enabled: true"