timers: Remove set_timer_slack() leftovers

We now have implicit batching in the timer wheel. The slack API is no longer
used, so remove it.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Alan Stern <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Arjan van de Ven <[email protected]>
Cc: Chris Mason <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Dmitry Eremin-Solenikov <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: George Spelvin <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jaehoon Chung <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: John Stultz <[email protected]>
Cc: Josh Triplett <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mathias Nyman <[email protected]>
Cc: Pali Rohár <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Sebastian Reichel <[email protected]>
Cc: Ulf Hansson <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

lib/random32.c

@@ -233,7 +233,6 @@ static void __prandom_timer(unsigned long dontcare)
 
 static void __init __prandom_start_seed_timer(void)
 {
-	set_timer_slack(&seed_timer, HZ);
 	seed_timer.expires = jiffies + msecs_to_jiffies(40 * MSEC_PER_SEC);
 	add_timer(&seed_timer);
 }