Tips on Customizing WP Accessibility

How to Hide WP Accessibility Admin Menus

function plt_hide_wp_accessibility_menus() {
	//Hide "Accessibility Stats".
	remove_menu_page('edit.php?post_type=wpa-stats');
	//Hide "Accessibility Stats → Accessibility Stats".
	remove_submenu_page('edit.php?post_type=wpa-stats', 'edit.php?post_type=wpa-stats');
	//Hide "Accessibility Stats → Stats Types".
	remove_submenu_page('edit.php?post_type=wpa-stats', 'edit-tags.php?taxonomy=wpa-stats-type&post_type=wpa-stats');

	//Hide "WP Accessibility".
	remove_menu_page('wp-accessibility');
	//Hide "WP Accessibility → WP Accessibility".
	remove_submenu_page('wp-accessibility', 'wp-accessibility');
	//Hide "WP Accessibility → Accessibility Fixes".
	remove_submenu_page('wp-accessibility', 'wp-accessibility-overlay');
	//Hide "WP Accessibility → Testing & Admin".
	remove_submenu_page('wp-accessibility', 'wp-accessibility-admin');
	//Hide "WP Accessibility → Get Help".
	remove_submenu_page('wp-accessibility', 'wp-accessibility-help');
}

add_action('admin_menu', 'plt_hide_wp_accessibility_menus', 11);

Where do I put this code?

How to Hide WP Accessibility Meta Boxes

function plt_hide_wp_accessibility_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Content Summary" meta box.
	remove_meta_box('wpa_content_summary_container', $screen->id, 'normal');
	//Hide the "WP Accessibility Statistics" meta box.
	remove_meta_box('wpa_stats', $screen->id, 'normal');
}

add_action('add_meta_boxes', 'plt_hide_wp_accessibility_metaboxes', 20);

How to Hide the "WP Accessibility Stats" Dashboard Widget

function plt_hide_wp_accessibility_dashboard_widgets() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Remove the "WP Accessibility Stats" widget.
	remove_meta_box('wpa_dashboard_widget_stats', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_wp_accessibility_dashboard_widgets', 20);