wined3d: Get rid of the WINED3DUSAGE_OVERLAY check in gdi_surface_private_setup().

Overlays shouldn't be any more broken for "GDI" surfaces than for regular
surfaces.

Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index 846b78f..297a34d 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -1094,12 +1094,6 @@
 
     TRACE("surface %p.\n", surface);
 
-    if (surface->resource.usage & WINED3DUSAGE_OVERLAY)
-    {
-        ERR("Overlays not yet supported by GDI surfaces.\n");
-        return WINED3DERR_INVALIDCALL;
-    }
-
     /* Sysmem textures have memory already allocated - release it,
      * this avoids an unnecessary memcpy. */
     hr = surface_create_dib_section(surface);