Slide 12
Slide 12 text
Hong Kong WordPress Meetup #61
If you want to remove the Language dropdown entirely, you
can use the login_display_language_dropdown filter.
add_filter( 'login_display_language_dropdown', '__return_false' );
Remove the Language dropdown entirely
Ref:
https://make.wordpress.org/core/2021/12/20/introducing-new-language-switcher-
on-the-login-screen-in-wp-5-9/