[openssl/openssl] 84356a: remove duplicated typedef for u64

[Max Bachmann]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 84356a02fe248cfd490b6ee2fa269c09410a5afb
      https://github.com/openssl/openssl/commit/84356a02fe248cfd490b6ee2fa269c09410a5afb
  Author: Max Bachmann <kontakt at maxbachmann.de>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M crypto/aes/aes_x86core.c

  Log Message:
  -----------
  remove duplicated typedef for u64

This typedef is already created in aes_local.h as `typedef uint64_t u64;`.

Reviewed-by: Shane Lontis <shane.lontis at oracle.com>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22969)