meson: with_glx never assigned to 'gallium-xlib', remove 'gallium-xlib'

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19221>

src/gallium/auxiliary/meson.build

@@ -455,7 +455,7 @@ if with_dri2 and with_platform_x11
   endif
 endif
 
-if with_glx == 'xlib' or with_glx == 'gallium-xlib'
+if with_glx == 'xlib'
   files_libgalliumvlwinsys += files('vl/vl_winsys_xlib_swrast.c')
 elif with_gallium_drisw_kms
   files_libgalliumvlwinsys += files('vl/vl_winsys_dri_vgem.c')

src/gallium/targets/va/meson.build

@@ -36,7 +36,7 @@ link_with_libva_gallium = [
   libpipe_loader_static, libws_null, libwsw, libswdri, libswkmsdri,
 ]
 
-if with_glx == 'xlib' or with_glx == 'gallium-xlib'
+if with_glx == 'xlib'
   link_with_libva_gallium += [libws_xlib]
 endif
 

src/gallium/targets/vdpau/meson.build

@@ -40,7 +40,7 @@ link_with_libvdpau_gallium = [
   libpipe_loader_static, libws_null, libwsw, libswdri, libswkmsdri,
 ]
 
-if with_glx == 'xlib' or with_glx == 'gallium-xlib'
+if with_glx == 'xlib'
   link_with_libvdpau_gallium += [libws_xlib]
 endif