Delete cdablevars option by default

Fixes weird autocompletion of directories and named users.
Fix #4864

lib/theme-and-appearance.zsh

@@ -25,7 +25,6 @@ fi
 #setopt no_beep
 setopt auto_cd
 setopt multios
-setopt cdablevars
 
 if [[ x$WINDOW != x ]]
 then