libgimpwidgets: remove gimp_color_profile_chooser_dialog_new()

Its API was too limited, and adding parameters for what we need next
would be equally random. It's a rarely used and mostly internal
widget, so simply use g_object_new().

libgimpwidgets/gimpcolorprofilechooserdialog.h

@@ -55,9 +55,8 @@ struct _GimpColorProfileChooserDialogClass
 };
 
 
-GType       gimp_color_profile_chooser_dialog_get_type (void) G_GNUC_CONST;
+GType   gimp_color_profile_chooser_dialog_get_type (void) G_GNUC_CONST;
 
-GtkWidget * gimp_color_profile_chooser_dialog_new      (const gchar *title);
 
 G_END_DECLS