[IMP] theme_*: remove save step from tour definition

It is now automatic as the last step of the homepage tours.

Part of https://github.com/odoo/design-themes/pull/2
task-2491890

theme_avantgarde/static/src/js/tour.js

@@ -43,6 +43,5 @@ wTourUtils.registerThemeHomepageTour("avantgarde_tour", [
     wTourUtils.dragNDrop(snippets[3], 'top'),
 
     wTourUtils.dragNDrop(snippets[4], 'top'),
-    wTourUtils.clickOnSave(),
 ]);
 });