do openssl fingerprinting/encoding directly, openssl provides all functions

src/libstrongswan/plugins/openssl/openssl_plugin.c

@@ -183,8 +183,6 @@ static void destroy(private_openssl_plugin_t *this)
 	lib->creds->remove_builder(lib->creds,
 					(builder_constructor_t)openssl_ec_public_key_builder);
 	
-	lib->encoding->remove_encoder(lib->encoding, openssl_encode);
-	
 	ENGINE_cleanup();
 	EVP_cleanup();
 	CONF_modules_free();
@@ -294,8 +292,5 @@ plugin_t *plugin_create()
 	lib->creds->add_builder(lib->creds, CRED_PUBLIC_KEY, KEY_ECDSA,
 						(builder_constructor_t)openssl_ec_public_key_builder);
 	
-	/* fingerprinting/encoding */
-	lib->encoding->add_encoder(lib->encoding, openssl_encode);
-	
 	return &this->public.plugin;
 }