stroke: Remove obsolete certificate registration for hash-and-URL

src/libcharon/plugins/stroke/stroke_ca.h

@@ -58,13 +58,6 @@ struct stroke_ca_t {
 	 */
 	void (*list)(stroke_ca_t *this, stroke_msg_t *msg, FILE *out);
 
-	/**
-	 * Check if a certificate can be made available through hash and URL.
-	 *
-	 * @param cert		peer certificate
-	 */
-	void (*check_for_hash_and_url)(stroke_ca_t *this, certificate_t* cert);
-
 	/**
 	 * Get a reference to a CA certificate if it is already stored,
 	 * otherwise returns the same certificate.