[IMP] web,website_slides: remove unused banner.scss

Part-of: odoo/odoo#129983

addons/web/__manifest__.py

@@ -62,7 +62,6 @@ This module provides the core of the Odoo Web Client.
             'web/static/src/legacy/scss/mimetypes.scss',
             'web/static/src/legacy/scss/modal.scss',
             'web/static/src/legacy/scss/animation.scss',
-            'web/static/src/legacy/scss/banner.scss',
             'web/static/src/legacy/scss/colorpicker.scss',
             'web/static/src/legacy/scss/popover.scss',
             'web/static/src/legacy/scss/translation_dialog.scss',
@@ -275,7 +274,6 @@ This module provides the core of the Odoo Web Client.
             'web/static/src/legacy/scss/mimetypes.scss',
             'web/static/src/legacy/scss/modal.scss',
             'web/static/src/legacy/scss/animation.scss',
-            'web/static/src/legacy/scss/banner.scss',
             'web/static/src/legacy/scss/colorpicker.scss',
             'web/static/src/legacy/scss/popover.scss',
             'web/static/src/legacy/scss/translation_dialog.scss',

addons/web/static/src/legacy/scss/banner.scss

@@ -1,9 +0,0 @@
-.o_has_banner {
-    .o_view_nocontent {
-        top: 30%;
-        @include media-breakpoint-down(md) {
-            position: relative;
-            margin: auto;
-        }
-    }
-}

addons/website_slides/__manifest__.py

@@ -143,7 +143,6 @@ Featuring
             'web/static/src/legacy/scss/modal.scss',
             'web/static/src/legacy/scss/animation.scss',
             'web/static/src/legacy/scss/daterangepicker.scss',
-            'web/static/src/legacy/scss/banner.scss',
             'web/static/src/legacy/scss/colorpicker.scss',
             'web/static/src/legacy/scss/popover.scss',
             'web/static/src/legacy/scss/translation_dialog.scss',