remove the 'random' from the random-port message

it's not really a random port, it's usually n+1

notebook/notebookapp.py

@@ -915,7 +915,7 @@ class NotebookApp(JupyterApp):
                 self.http_server.listen(port, self.ip)
             except socket.error as e:
                 if e.errno == errno.EADDRINUSE:
-                    self.log.info('The port %i is already in use, trying another random port.' % port)
+                    self.log.info('The port %i is already in use, trying another port.' % port)
                     continue
                 elif e.errno in (errno.EACCES, getattr(errno, 'WSAEACCES', errno.EACCES)):
                     self.log.warning("Permission to listen on port %i denied" % port)