The Events Calendar: Remove the Organizers post type from Events

functions.php

<?php

/**
 * The Events Calendar: Remove the Organizers post type from Events.
 *
 * Replace instances of ORGANIZER_POST_TYPE with VENUE_POST_TYPE if you
 * want to do so for Venues instead.
 *
 * @link https://theeventscalendar.com/knowledgebase/linked-post-types/
 * @link https://gist.github.com/a521d02facbc64ce3891c9341384cc07
 */
function tribe_remove_organizers_from_events( $default_types ) {

	if (
		! is_array( $default_types )
		|| empty( $default_types )
		|| empty( Tribe__Events__Main::ORGANIZER_POST_TYPE )
	) {
		return $default_types;
	}

	if ( ( $key = array_search( Tribe__Events__Main::ORGANIZER_POST_TYPE, $default_types ) ) !== false ) {
		unset( $default_types[ $key ] );
	}

	return $default_types;
}

add_filter( 'tribe_events_register_default_linked_post_types', 'tribe_remove_organizers_from_events' );

@gavin310 glad to know! 🥳