Remove NIX bits from the Proc ctl command.

There's no chance we'll need this.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Make tracing easier by allowing us to start via /proc/pid/ctl

echo trace > /proc/pid/ctl

starts tracing.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>