Removes a widget from the list of mnemonic labels for this widget.
See [method@Gtk.Widget.list_mnemonic_labels]. The widget must have previously been added to the list with [ method@Gtk.Widget.add_mnemonic_label].
this |
a `GtkWidget` |
label |
a `GtkWidget` that was previously set as a mnemonic label for this with [ method@Gtk.Widget.add_mnemonic_label] |