locking/rtmutex: Update stale plist comments
locking/rtmutex: Update stale plist comments

... as of fb00aca4744 (rtmutex: Turn the plist into an rb-tree) we
no longer use plists for queuing any waiters. Update stale comments.

Signed-off-by: Davidlohr Bueso <004a7ec0459a12f8239e6a658beae4a155e8573d@suse.de>
Cc: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>
Cc: Mike Galbraith <d1e2fad1f6337a0a3a08db0a5375a8a96150db4c@gmail.com>
Cc: Paul E. McKenney <1e0ce936bb9b355d257bf5790d2513c3f28be22b@linux.vnet.ibm.com>
Cc: Sebastian Andrzej Siewior <265264fed90bdf8e813a354375ec16f47ebdb1c5@linutronix.de>
Cc: Davidlohr Bueso <bfcdf3e6ca6cef45543bfbb57509c92aec9a39fb@stgolabs.net>
Cc: Peter Zijlstra <3fddac958924aef220f202ca567388ddab3f14a8@infradead.org>
Link: http://lkml.kernel.org/r/1432056298-18738-4-git-send-email-bfcdf3e6ca6cef45543bfbb57509c92aec9a39fb@stgolabs.net
Signed-off-by: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs