community/chatty: remove dependency on purple-mm-sms
Because chatty (as of the v5.0.0beta series) no longer uses purple-mm-sms, this merge request removes the (now supefluous) dependency on purple-mm-sms.
Because chatty (as of the v5.0.0beta series) no longer uses purple-mm-sms, this merge request removes the (now supefluous) dependency on purple-mm-sms.