[IMP] *: replace mobile menu feature by new mobile layout

See community commit for details.

task-3060986

Part-of: odoo/design-themes#651

theme_paptic/models/theme_paptic.py

@@ -9,4 +9,3 @@ class ThemePaptic(models.AbstractModel):
         self.enable_asset("website.ripple_effect_js")
 
         self.enable_view('website.template_footer_centered')
-        self.enable_header_off_canvas()

theme_paptic/static/src/scss/primary_variables.scss

@@ -44,7 +44,6 @@ $o-website-values-palettes: (
         'header-font-size': (14 / 16) * 1rem,
         'headings-line-height': 1.1,
 
-        'hamburger-type': 'off-canvas',
         'menu-box-shadow': false,
 
         'btn-ripple': true,