OS-7753 THREAD_KPRI_RELEASE does nothing of the sort
Reviewed by: Bryan Cantrill <bryan@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

*** 1,9 ****
  \
  \ Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  \ Copyright 2012 Garrett D'Amore <garrett@damore.org>.  All rights reserved.
! \ Copyright 2018 Joyent, Inc.
  \
  \ CDDL HEADER START
  \
  \ The contents of this file are subject to the terms of the
  \ Common Development and Distribution License (the "License").
--- 1,9 ----
  \
  \ Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  \ Copyright 2012 Garrett D'Amore <garrett@damore.org>.  All rights reserved.
! \ Copyright 2019 Joyent, Inc.
  \
  \ CDDL HEADER START
  \
  \ The contents of this file are subject to the terms of the
  \ Common Development and Distribution License (the "License").
*** 86,96 ****
          t_pcb                   T_LABEL
          t_lock
          t_lockstat
          t_lockp
          t_lock_flush
-         t_kpri_req
          t_oldspl
          t_pri
          t_pil
          t_lwp
          t_procp
--- 86,95 ----