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().

modules/display-filter-proof.c

@@ -301,7 +301,9 @@ cdisplay_proof_configure (GimpColorDisplay *display)
   gtk_table_set_col_spacings (GTK_TABLE (table), 6);
   gtk_table_set_row_spacings (GTK_TABLE (table), 6);
 
-  dialog = gimp_color_profile_chooser_dialog_new (_("Choose an ICC Color Profile"));
+  dialog = g_object_new (GIMP_TYPE_COLOR_PROFILE_CHOOSER_DIALOG,
+                         "title", _("Choose an ICC Color Profile"),
+                         NULL);
 
   history = gimp_personal_rc_file ("profilerc");
   combo = gimp_color_profile_combo_box_new (dialog, history);