Your application can no longer send sms and be available on the PlayStore. It can do it only if your application will behave as the default sms application. You have to look for an alternative way to send sms to your customers.
Google has changed their policy regarding the following permissions: READ_SMS, SEND_SMS, WRITE_SMS, RECEIVE_SMS READ_CALL_LOG, WRITE_CALL_LOG, PROCESS_OUTGOING_CALLS Only the default phone or messaging apps can use these permissions...