skeleton/etc/profile: remove /usr/bin/X11 from PATH

That directory has been unused for ages so remove it.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

system/skeleton/etc/profile

@@ -5,7 +5,6 @@ export PATH=\
 /sbin:\
 /usr/bin:\
 /usr/sbin:\
-/usr/bin/X11:\
 /usr/local/bin
 
 # If running interactively, then: