Rewrite: Add a remove_permastruct() helper function.

It can be used to remove permastructs that were added using `add_permastruct()`.

Fixes #35235.

git-svn-id: https://develop.svn.wordpress.org/trunk@36181 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-rewrite.php

@@ -1744,6 +1744,18 @@ class WP_Rewrite {
 		$this->extra_permastructs[ $name ] = $args;
 	}
 
+	/**
+	 * Removes a permalink structure.
+	 *
+	 * @since 4.5.0
+	 * @access public
+	 *
+	 * @param string $name Name for permalink structure.
+	 */
+	public function remove_permastruct( $name ) {
+		unset( $this->extra_permastructs[ $name ] );
+	}
+
 	/**
 	 * Removes rewrite rules and then recreate rewrite rules.
 	 *