[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

X-original-commit: 536a8466f6

theme_graphene/static/src/js/tour.js

@@ -45,7 +45,5 @@ wTourUtils.registerThemeHomepageTour("graphene_tour", [
     wTourUtils.clickOnSnippet(snippets[4], 'top'),
     wTourUtils.changeBackgroundColor('left'),
     wTourUtils.selectColorPalette(),
-
-    wTourUtils.clickOnSave(),
 ]);
 });