a11y: not using default name for switch

A proper name or label is required. In the same way, if the
widget is labelled, ATs uses to expose both the label and the
name, making the final output not really user-friendly.

https://bugzilla.gnome.org/show_bug.cgi?id=707872

gtk/a11y/gtkswitchaccessible.c

@@ -60,7 +60,6 @@ gtk_switch_accessible_initialize (AtkObject *accessible,
   ATK_OBJECT_CLASS (gtk_switch_accessible_parent_class)->initialize (accessible, widget);
 
   atk_object_set_role (accessible, ATK_ROLE_TOGGLE_BUTTON);
-  atk_object_set_name (accessible, C_("light switch widget", "Switch"));
   atk_object_set_description (accessible, _("Switches between on and off states"));
 }