[FIX] doc: remove reference to website_less

No more module website_less needed to create a theme
Fixes #8182

doc/howtos/themes.rst

@@ -13,10 +13,6 @@ Ready to create your own theme? Great. Here are some things you should know befo
 
 .. image:: theme_tutorial_assets/img/Intro.jpg
 
-.. warning::
-
-  This tutorial requires having installed Odoo v9.0 and the Theme Support Engine (website_less) module. https://www.odoo.com/apps/9.0/website_less/
-
 
 An introduction for web designers
 =================================
@@ -250,7 +246,7 @@ Open the ``__openerp__.py`` you created and copy/paste the following:
     'data': [
     ],
     'category': 'Theme/Creative',
-    'depends': ['website', 'website_less'],
+    'depends': ['website'],
   }
 
 Replace the first four property’s values with anything you like.
@@ -263,7 +259,7 @@ The ``data`` property will contain the xml files list. Right now it’s empty, b
 ``category`` defines your module category (always “Theme”) and, after a slash, the subcategory. You can use one subcategory from the Odoo Apps categories list. (https://www.odoo.com/apps/themes)
 
 
-``depends`` specifies the modules needed by our theme to work properly. For our tutorial theme, we only need website and website_less. If you need blogging or eCommerce features as well, you have to add those modules too.
+``depends`` specifies the modules needed by our theme to work properly. For our tutorial theme, we only need website. If you need blogging or eCommerce features as well, you have to add those modules too.
 
 .. code-block:: python
 
@@ -691,7 +687,7 @@ We start by adding a new file in our views folder - name it **options.xml** and
 
 .. code-block:: xml
 
-  <template id="snippet_testimonial_opt" name="Snippet Testimonial Options" inherit_id="website_less.snippet_options">
+  <template id="snippet_testimonial_opt" name="Snippet Testimonial Options" inherit_id="website.snippet_options">
     <xpath expr="//div[@data-js='background']" position="after">
       <div data-selector=".snippet_testimonial"> <!-- Options group -->
         <li class="dropdown-submenu">
@@ -832,7 +828,7 @@ This time we have to inherit ``assets_editor`` instead of ``assets_frontend``.
 
 .. code-block:: xml
 
-  <template id="my_js" inherit_id="website_less.assets_editor" name="My Js">
+  <template id="my_js" inherit_id="website.assets_editor" name="My Js">
     <xpath expr="script[last()]" position="after">
       <script type="text/javascript" src="/theme_tutorial/static/src/js/tutorial_editor.js" />
     </xpath>