[FIX] theme_*: fix linter error for runbot build

There is a linter error in the modified files of this PR about `require`
not defined.
It's actually not really a problem as those files are transcompiled from
ES6 module to odoo module, injecting `require` before the file is
actually used/read by the browser, at which point no issue actually
arise.

Those linter error were introduced with PR [1] in Odoo 15 but were fix
in Odoo 16 with commit [2] (which should have arguably be done in Odoo
15).

[1]: https://github.com/odoo/design-themes/pull/500
[2]: https://github.com/odoo/design-themes/commit/dc2f5112022b5f987ed418e04b5e15c93dc7a731

closes odoo/design-themes#747

Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

theme_notes/static/src/js/tour.js

@@ -1,10 +1,8 @@
 /** @odoo-module */
 
+import { _t } from 'web.core';
 import wTourUtils from 'website.tour_utils';
 
-const core = require("web.core");
-const _t = core._t;
-
 const snippets = [
     {
         id: 's_carousel',