MAINTAINERS, sched: Drop PREEMPTIBLE KERNEL section entry

The PREEMPTIBLE KERNEL section entry seems quite outdated:

Robert Love is not actively maintaining the file anymore, nor a recorded
contributor to the files in the PREEMPTIBLE KERNEL section for the last
few years.

The mailing list [email protected] does not exist
anymore; the website just points to some very old patches for v2.4/v2.5.

So, let's delete the PREEMPTIBLE KERNEL section entry and clean this up:

- Documentation/preempt-locking.txt is not modified much anyway, and the
  changes in that file are generally maintained by Jonathan Corbet. So,
  we do not need to explicitly mention Documentation/preempt-locking.txt
  in MAINTAINERS.

- include/linux/preempt.h is maintained by Peter and Ingo, so we simply
  add that file to the SCHEDULER section entry.

I got directed to this issue, as I could not subscribe to the outdated
mailing list address and decided to investigate and then cleaned this up.

Signed-off-by: Lukas Bulwahn <[email protected]>
Acked-by: Peter Zijlstra <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Robert Love <[email protected]>
Cc: Robert Love <[email protected]>
Cc: Robert Love <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions