meson: Fix overlinkage of dri3 loader

This was covering for underinkage elsewhere. With that fixed these can
be removed.

v2: - sort dependencies

Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>
Reviewed-by: Jon Turney <jon.turney@dronecode.org.uk> (v1)
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/loader/meson.build

@@ -27,8 +27,7 @@ if with_platform_x11 and with_dri3
     c_args : c_vis_args,
     include_directories : inc_include,
     dependencies : [
-      dep_xshmfence, dep_xcb_present, dep_xcb_dri3, dep_xcb_sync, dep_x11_xcb,
-      dep_xext, dep_xdamage, dep_xcb_glx, dep_libdrm,
+      dep_libdrm, dep_xcb_dri3, dep_xcb_present, dep_xcb_sync, dep_xshmfence,
     ],
     build_by_default : false,
   )