[IMP] web: remove autocomplete scss dead code

Autocomplete is not used on mobile since we open the kanban view
in a modal for all x2many fields.

This code was copied from enterprise to have the responsiveness
in community.

Related PR: https://github.com/odoo/enterprise/pull/28946

closes odoo/odoo#109050

Related: odoo/enterprise#28946
Signed-off-by: Romain Estievenart (res) <res@odoo.com>

addons/web/static/src/views/form/form_controller.scss

@@ -1183,17 +1183,6 @@
     }
 }
 
-@include media-breakpoint-down(md) {
-    // change the dropdown ui for mobile website
-    .ui-autocomplete.ui-front.ui-menu.ui-widget.ui-widget-content {
-        width: 100% !important;
-        height: 80%;
-        max-height: fit-content;
-        left: 0 !important;
-        overflow-y: auto;
-    }
-}
-
 .o_field_section_and_note_one2many ~ .row.o_group {
     clear: both;
     justify-content: space-between;