mesa-xlib: remove, it serves no useful purpose

(From OE-Core rev: 7a815ca21f57feb4706a7bb0656cbabd74bc873f)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/mesa/mesa-xlib.inc

@@ -1 +0,0 @@
-EXTRA_OECONF += " --with-driver=xlib --without-gallium-drivers"

meta/recipes-graphics/mesa/mesa-xlib_8.0.4.bb

@@ -1,5 +0,0 @@
-require mesa-common.inc
-require mesa-${PV}.inc
-require mesa-xlib.inc
-PR = "${INC_PR}.2"
-

meta/recipes-graphics/mesa/mesa-xlib_git.bb

@@ -1,8 +0,0 @@
-require mesa-common.inc
-require mesa-git.inc
-require mesa-xlib.inc
-
-# this needs to be lower than -1 because all mesa-dri have -1 and git version has highest PV, but shouldn't be default
-DEFAULT_PREFERENCE = "-2"
-
-PR = "${INC_PR}.1"