[klibc] arm64: remove useless <klibc/asmmacros.h> file

<klibc/asmmacros.h> is a file specific to arm32; the file is empty on
arm64 so we can just drop it.

Cc: Neil Williams <codehelp@debian.org>
Cc: Anil Singhar <anil.singhar@linaro.org>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
4 files changed