Hide sticky post option on WordPress 5.8

hide-sticky-post-option.php

// Target the first panel__row in the scheduel part of sidebar on post type = post

add_action('admin_head', function () {
  echo '
    <style>
      body.wp-admin.post-type-post .interface-interface-skeleton__sidebar .components-panel__body.edit-post-post-status .edit-post-post-schedule + .components-panel__row {
        display: none;
      }
    </style>
  ';
});