modules: sys_request_server: use ncd_read_bconnection_addr() to parse the listen address. This changes the address format to be  the same as sys.connect() and sys.listen(). Also remove the now redundant unlinking of unix sockets, which is taken care of by  BListener.
modules: sys_request_server: use ncd_read_bconnection_addr() to parse the listen address. This changes the address format to be 
the same as sys.connect() and sys.listen(). Also remove the now redundant unlinking of unix sockets, which is taken care of by 
BListener.

SeReRPRo/badvpn,SeReRPRo/badvpn,SeReRPRo/badvpn,SeReRPRo/badvpn,SeReRPRo/badvpn