4.14 revert "seccomp: add a selftest for get_metadata"

["Rantala, Tommi T. (Nokia - FI/Espoo)" <tommi.t.rantala@xxxxxxxxx>]

Hi Greg,

Can you please revert this commit in 4.14?

commit e65cd9a20343ea90f576c24c38ee85ab6e7d5fec
Author: Tycho Andersen <tycho@xxxxxxxx>
Date:   Tue Feb 20 19:47:47 2018 -0700

    seccomp: add a selftest for get_metadata
    
    [ Upstream commit d057dc4e35e16050befa3dda943876dab39cbf80 ]
    
    Let's test that we get the flags correctly, and that we preserve
the filter
    index across the ptrace(PTRACE_SECCOMP_GET_METADATA) correctly.



PTRACE_SECCOMP_GET_METADATA was only added in 4.16
(26500475ac1b499d8636ff281311d633909f5d20)


And it's also breaking seccomp_bpf.c compilation for me:

seccomp_bpf.c: In function ‘get_metadata’:
seccomp_bpf.c:2878:26: error: storage size of ‘md’ isn’t known
  struct seccomp_metadata md;
                          ^~

-Tommi