World: Remove the X11BASE variable

Requested-by: marino
drm/i915: revert part of "Make the GEM code more Linux-like"

This reverts part of commit d1c259eee6a290aadce1c78a746e131034aba76a
drm/i915: Make the GEM code more Linux-like

According to issue #2733 this code was causing ring initialization
failures on some machines.