[REF] website_mass_mailing: remove dead code linked to newsletter popup

Commit merged at [1] left dead code behind.

[1]: https://github.com/odoo/odoo/commit/8873fe7240e505553650fc15aea1ea3a299acc0f

Part-of: odoo/odoo#81699

addons/website_mass_mailing/__manifest__.py

@@ -22,7 +22,6 @@ On a simple click, your visitors can subscribe to mailing lists managed in the E
             'website_mass_mailing/static/src/js/website_mass_mailing.js',
         ],
         'website.assets_wysiwyg': [
-            'website_mass_mailing/static/src/js/wysiwyg.js',
             'website_mass_mailing/static/src/js/website_mass_mailing.editor.js',
         ],
         'web.assets_tests': [

addons/website_mass_mailing/static/src/js/wysiwyg.js

@@ -1,35 +0,0 @@
-odoo.define('website_mass_mailing.wysiwyg', function (require) {
-'use strict';
-
-const Wysiwyg = require('web_editor.wysiwyg');
-
-Wysiwyg.include({
-    //--------------------------------------------------------------------------
-    // Private
-    //--------------------------------------------------------------------------
-
-    /**
-     * @override
-     */
-    _saveElement: function ($el, context, withLang) {
-        var self = this;
-        var defs = [this._super.apply(this, arguments)];
-        var $popups = $el.find('.o_newsletter_popup');
-        _.each($popups, function (popup) {
-            var $popup = $(popup);
-            var content = $popup.data('content');
-            if (content) {
-                defs.push(self._rpc({
-                    route: '/website_mass_mailing/set_content',
-                    params: {
-                        'newsletter_id': parseInt($popup.attr('data-list-id')),
-                        'content': content,
-                    },
-                }));
-            }
-        });
-        return Promise.all(defs);
-    },
-});
-
-});

addons/website_mass_mailing/views/snippets_templates.xml

@@ -82,7 +82,6 @@
 </template>
 
 <template id="newsletter_subscribe_options" name="Newsletter Subscribe Options" inherit_id="website.snippet_options">
-    <xpath expr="//*[@t-set='so_snippet_addition_selector']" position="inside">, .o_newsletter_popup</xpath>
     <xpath expr="//div" position="after">
         <t t-set="selector" t-value="'.js_subscribe'"/>
         <div data-js="mailing_list_subscribe"
@@ -96,9 +95,6 @@
         </div>
         <div t-att-data-selector="selector" data-drop-near="p, h1, h2, h3, blockquote, .card"/>
     </xpath>
-    <xpath expr="//div[@data-js='anchor']" position="attributes">
-        <attribute name="data-exclude" add=".o_newsletter_popup" separator=","/>
-    </xpath>
 </template>
 
 <!-- Extend default mass_mailing snippets with website feature -->