Todo: deprecate SIMD implementation of sha512

[trcrsired]

on x86_64, intel is going to introduce APX, resulting simd slowing down the program. on aarch64, there is no point for simd. on wasm, neither.

[trcrsired]

Asm implementations in openssl are becoming naive and pointless. They even harm optimizations since the CPU and compilers evolve day by day plus we keep reporting bugs to GCC and llvm. They are wasting their time and causing unmaintainable hell.