gtk: Gir.toml: Use new gdk_backend cfg
@@ -1535,7 +1535,7 @@ status = "generate"
[[object]]
name = "Gtk.Plug"
status = "generate"
-cfg_condition = "all(not(windows),not(target_os = \"macos\"))"
+cfg_condition = "gdk_backend = \"x11\""
[[object]]
name = "Gtk.Popover"
@@ -1748,7 +1748,7 @@ version = "3.20"
[[object]]
name = "Gtk.Socket"
status = "generate"
-cfg_condition = "all(not(windows),not(target_os = \"macos\"))"
+cfg_condition = "gdk_backend = \"x11\""
trait_name = "GtkSocketExt"
[[object]]
