remove asm-generic/ptrace.h v3

[Thomas Gleixner]

On Mon, 24 Jun 2019, Christoph Hellwig wrote:
> 
> asm-generic/ptrace.h is a little weird in that it doesn't actually
> implement any functionality, but it provided multiple layers of macros
> that just implement trivial inline functions.  We implement those
> directly in the few architectures and be off with a much simpler
> design.
> 
> I'm not sure which tree is the right place, but may this can go through
> the asm-generic tree since it removes an asm-generic header?

Makes sense.

Thanks,

	tglx