[libc] Fix or delete automemcpy

[vonosmas]

The automemcpy framework in libc/benchmarks/automemcpy seems to be in a broken state today.

The auto-generated code includes headers such as "elements.h"

llvm-project/libc/benchmarks/automemcpy/lib/CodeGen.cpp

Line 538 in 64c9218

Stream << "#include \"src/string/memory_utils/elements.h\"\n";

which were deleted years ago (534f4bc).

Recent updates such as LIBC_NAMESPACE_DECL migration 5ff3ff3 don't work properly - they added headers to the CodeGen file rather than generated code. Looks like it's not tested / monitored properly.

Should we consider this experiment done and delete the code? If not, then it should arguably be fixed and added to the buildbots to prevent future failures.

[llvmbot]

@llvm/issue-subscribers-libc

Author: Alexey Samsonov (vonosmas)

The auto-generated code includes headers