fix(material/select): remove incompatible aria-autocomplete attribute (…

…#29645)

Fixes a bug reported in MatSelect where the usage of aria-autocomplete
is not a valid attribute that can be used with aria role=listbox.
Removes the aria-autocomplete attribute to fix the violation:
aria-allowed-attr.

Fixes b/352496530

src/material/select/select.ts

@@ -178,7 +178,6 @@ export class MatSelectChange {
  changeDetection: ChangeDetectionStrategy.OnPush,
  host: {
  'role': 'combobox',
- 'aria-autocomplete': 'none',
  'aria-haspopup': 'listbox',
  'class': 'mat-mdc-select',
  '[attr.id]': 'id',