feat: remove gmssl header

include/gmssl/pem.h

@@ -1,33 +0,0 @@
-/*
- *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
- *
- *  Licensed under the Apache License, Version 2.0 (the License); you may
- *  not use this file except in compliance with the License.
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- */
-
-
-#ifndef GMSSL_PEM_H
-#define GMSSL_PEM_H
-
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <gmssl/base64.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-int pem_read(FILE *fp, const char *name, uint8_t *out, size_t *outlen, size_t maxlen);
-int pem_write(FILE *fp, const char *name, const uint8_t *in, size_t inlen);
-
-
-#ifdef __cplusplus
-}
-#endif
-#endif