How to Hide Make Builder Meta Boxes

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

	//Hide the "Post Builder" meta box.
	remove_meta_box('ttfmake-builder-toggle-upsell', $screen->id, 'side');
	//Hide the "Page Builder" meta box.
	remove_meta_box('ttfmake-builder', $screen->id, 'normal');
	//Hide the "Page Builder" meta box.
	remove_meta_box('ttfmake-builder-toggle', $screen->id, 'side');
}

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

Where do I put this code?