Revert #1682 (three-axis milling) (#1715)

Thanks @bherbruck.

crates/ui-egui/src/dialogs.rs

@@ -3130,7 +3130,6 @@ pub fn show(app: &mut SolveApp, ctx: &egui::Context) {
 
 /// Close the dialog without applying it (Esc, Cancel). An edit puts the timeline marker back.
 pub fn cancel(app: &mut SolveApp) {
-    crate::manufacturing::cancel_editor(app);
     app.applying = None;
     if let Some(mut d) = app.dialog.take() {
         crate::dialogs_motion::closed(app, &mut d, false);