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Tips on Customizing CSS JS Manager, Async JavaScript, Defer Render Blocking CSS supports WooCommerce

How to Hide CSS JS Manager, Async JavaScript, Defer Render Blocking CSS Admin Menus

function plt_hide_css_js_manager_menus() {
	//Hide "CSS JS Manager".
	remove_menu_page('css-js-manager');

	//Hide "Critical CSS".
	remove_menu_page('edit.php?post_type=pi_critical_css');
	//Hide "Critical CSS → Critical CSS".
	remove_submenu_page('edit.php?post_type=pi_critical_css', 'edit.php?post_type=pi_critical_css');
	//Hide "Critical CSS → Add New Critical CSS".
	remove_submenu_page('edit.php?post_type=pi_critical_css', 'post-new.php?post_type=pi_critical_css');
}

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

Where do I put this code?

How to Hide CSS JS Manager, Async JavaScript, Defer Render Blocking CSS Meta Boxes

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

	//Hide the "Select Critical CSS" meta box.
	remove_meta_box('select-critical-css', $screen->id, 'advanced');
	//Hide the "Critical CSS" meta box.
	remove_meta_box('critical-css', $screen->id, 'advanced');
}

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

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