Ssh remote command and print same line

john-test:/root> ssh -q chicago-ser uname;date   
Linux
Fri Oct 13 16:41:11 GMT 2017

How I can print on the same line like this :

Linux Fri Oct 13 16:41:11 GMT 2017

You have to convince uname not to output its <LF> char.

Until you find a way to do so, try

echo $(uname;date)
Linux 13.10.17 19:02

or

{ uname;date; } | tr '\n' ' ' 
Linux 13.10.17 19:03

Another option, without actually removing the newline, but printing without it:

echo $(ssh -q chicago-ser uname;date)

(in your command, date is running on the local host, which may or may not be the same as the remote host, you'd need add quotes to change that)