server: remove redundant listen (#583)
server: remove redundant listen (#583)

The socket is already listening after a call to make_server_socket.

Co-authored-by: Yury Smolsky <f26331c55f2e9b348f65eb11cafdbe38d0f7ac5e@smolsky.by>
kr/beanstalkd,kr/beanstalkd