This reverts commit 
81bf550d9cdfe0325eb1504b06c9f6511b442c1a.
HAVE_ARCH_TRACEHOOK requires defining the user_regset interfaces,
including task_user_regset_view().  parisc doesn't do that yet,
so don't lie about it.
Signed-off-by: Roland McGrath <roland@redhat.com>
        select BUG
        select HAVE_PERF_EVENTS
        select GENERIC_ATOMIC64 if !64BIT
-       select HAVE_ARCH_TRACEHOOK
        help
          The PA-RISC microprocessor is designed by Hewlett-Packard and used
          in many of their workstations & servers (HP9000 700 and 800 series,