Delete unwanted Stream Notification Rule post meta from other post types

gistfile1.php

<?php

function wp_stream_scrub_notification_rule_post_meta() {
	$post_types = get_post_types( array(), 'names' );

	unset( $post_types['stream_notification'] );

	$args = array(
		'post_type'      => $post_types,
		'post_status'    => 'any',
		'meta_key'       => 'triggers',
		'posts_per_page' => -1,
		'no_found_rows'  => true,
	);

	$posts = get_posts( $args );

	if ( ! $posts ) {
		return;
	}

	foreach ( $posts as $post ) {
		delete_post_meta( $post->ID, 'triggers' );
		delete_post_meta( $post->ID, 'groups' );
		delete_post_meta( $post->ID, 'alerts' );
	}
}
add_action( 'init', 'wp_stream_scrub_notification_rule_post_meta', 11 );

Put this code in your theme's functions.php file to remove unwanted Stream Notification rule meta from your other post types, which was a bug reported here: xwp/stream#693

Don't leave this in your functions file, because it will run on every page load. You should remove it after you've refreshed at least once.

Also, it might take a while to refresh the first time depending on the number of posts you have. If you have 10,000+ posts or something, it won't be a good idea to run this code.