Revert "Fix tmux status line ad-hoc-ly"

This reverts commit f3fd95782c.

tmux.conf

@@ -26,8 +26,7 @@ setw -g mode-mouse off
 # set -g set-titles off
 set -g display-panes-time 5000
 set -g window-status-current-format "#I|#W:#T#F"
-#set -g window-status-format "#I|#W:#T#F"
-set -g window-status-format "#I|#T#F"
+set -g window-status-format "#I|#W:#T#F"
 # set window name automatically from command currently running
 set -g automatic-rename on