[REF] web_editor, website: remove useless code

Commit https://github.com/odoo/odoo/commit/29075a8e2c734624cec4f6009185616634f70dea
introduced some python methods which became useless with commit
https://github.com/odoo/odoo/commit/aef6a5aaed22b250799ce92b5021d240fed9e12e

They were not removed with that commit since it was a stable version and
because it would have made forward-port difficult because of master
tasks. Now that those tasks are merged, this commit removes the useless
methods.

addons/web_editor/controllers/main.py

@@ -326,7 +326,7 @@ class Web_Editor(http.Controller):
         """
         # Related views must be fetched if the user wants the views and/or the style
         views = request.env["ir.ui.view"].get_related_views(key, bundles=bundles)
-        views = views.read(request.env['web_editor.assets'].get_view_fields_to_read())
+        views = views.read(['name', 'id', 'key', 'xml_id', 'arch', 'active', 'inherit_id'])
 
         scss_files_data_by_bundle = []
         js_files_data_by_bundle = []

addons/web_editor/models/assets.py

@@ -18,9 +18,6 @@ class Assets(models.AbstractModel):
     _name = 'web_editor.assets'
     _description = 'Assets Utils'
 
-    def get_view_fields_to_read(self):
-        return ['name', 'id', 'key', 'xml_id', 'arch', 'active', 'inherit_id']
-
     def get_all_custom_attachments(self, urls):
         """
         Fetch all the ir.attachment records related to given URLs.

addons/website/models/assets.py

@@ -7,11 +7,6 @@ from odoo import models
 class Assets(models.AbstractModel):
     _inherit = 'web_editor.assets'
 
-    def get_view_fields_to_read(self):
-        res = super(Assets, self).get_view_fields_to_read()
-        res.append('website_id')
-        return res
-
     def _get_custom_attachment(self, custom_url, op='='):
         """
         See web_editor.Assets._get_custom_attachment