removing version from uname output since it is on the next line

Author: joseph-flinn

tmuxp/cli.py

@@ -1102,7 +1102,7 @@ def format_tmux_resp(std_resp):
                 [
                     'dist: %s' % platform.platform(),
                     'arch: %s' % platform.machine(),
-                    'uname: %s' % '; '.join(platform.uname()[:4]),
+                    'uname: %s' % '; '.join(platform.uname()[:3]),
                     'version: %s' % platform.version(),
                 ]
             )