Revert [43632] from the 4.9 branch.

These new hooks are not part of the 4.9.x scope, and will be reintroduced
as part of 5.0.x.

See #44733.


git-svn-id: https://develop.svn.wordpress.org/branches/4.9@43690 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/taxonomy.php

@@ -578,16 +578,6 @@ function register_taxonomy_for_object_type( $taxonomy, $object_type) {
 	// Filter out empties.
 	$wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type );
 
-	/**
-	 * Fires after a taxonomy is registered for an object type.
-	 *
-	 * @since 4.9.9
-	 *
-	 * @param string $taxonomy    Taxonomy name.
-	 * @param string $object_type Name of the object type.
-	 */
-	do_action( 'registered_taxonomy_for_object_type', $taxonomy, $object_type );
-
 	return true;
 }
 
@@ -616,17 +606,6 @@ function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) {
 		return false;
 
 	unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] );
-
-	/**
-	 * Fires after a taxonomy is unregistered for an object type.
-	 *
-	 * @since 4.9.9
-	 *
-	 * @param string $taxonomy    Taxonomy name.
-	 * @param string $object_type Name of the object type.
-	 */
-	do_action( 'unregistered_taxonomy_for_object_type', $taxonomy, $object_type );
-
 	return true;
 }