dnssec: remove unused error code

src/dnssec/lib/dnssec/error.h

@@ -92,7 +92,6 @@ enum dnssec_error {
 	DNSSEC_KEYSTORE_INVALID_BACKEND,
 	DNSSEC_KEYSTORE_INVALID_CONFIG,
 
-	DNSSEC_P11_INVALID_CONFIG,
 	DNSSEC_P11_FAILED_TO_LOAD_MODULE,
 	DNSSEC_P11_TOO_MANY_MODULES,
 	DNSSEC_P11_TOKEN_NOT_AVAILABLE,

src/dnssec/lib/error.c

@@ -69,7 +69,6 @@ static const error_message_t ERROR_MESSAGES[] = {
 	{ DNSSEC_KEYSTORE_INVALID_BACKEND, "invalid KASP keystore backend" },
 	{ DNSSEC_KEYSTORE_INVALID_CONFIG,  "invalid KASP keystore configuration" },
 
-	{ DNSSEC_P11_INVALID_CONFIG,        "invalid PKCS #11 configuration" },
 	{ DNSSEC_P11_FAILED_TO_LOAD_MODULE, "failed to load PKCS #11 module" },
 	{ DNSSEC_P11_TOO_MANY_MODULES,      "too many PKCS #11 modules loaded" },
 	{ DNSSEC_P11_TOKEN_NOT_AVAILABLE,   "PKCS #11 token not available" },