feat: remove gmssl header

include/gmssl/mem.h

@@ -1,27 +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_MEM_H
-#define GMSSL_MEM_H
-
-#include <stdint.h>
-#include <stddef.h> // where size_t from
-
-
-void memxor(void *r, const void *a, size_t len);
-void gmssl_memxor(void *r, const void *a, const void *b, size_t len);
-
-int gmssl_secure_memcmp(const volatile void * volatile in_a, const volatile void * volatile in_b, size_t len);
-void gmssl_secure_clear(void *ptr, size_t len);
-
-int mem_is_zero(const uint8_t *buf, size_t len); // FIXME: uint8_t * to void *
-
-#endif
-