Remove system_file:file { lock ioctl } from domain_deprecated. The only
domains triggering this were dex2oat and netd, which are fixed in this
change.

Addresses the following logspam similar to:

  avc: granted { lock } for comm="iptables"
  path="/system/etc/xtables.lock" dev="sda22" ino=3745
  scontext=u:r:netd:s0 tcontext=u:object_r:system_file:s0 tclass=file

  avc: granted { lock } for comm="dex2oat"
  path="/system/framework/arm/boot-okhttp.art" dev="dm-0" ino=1295
  scontext=u:r:dex2oat:s0 tcontext=u:object_r:system_file:s0 tclass=file

Test: device boots and no obvious problems.
Bug: 28760354
Bug: 36879751
Change-Id: Iac851c0e49a52ce4000fdfe16e68c17ff819693f