hrtimers/tick/clockevents: Remove sloppy license references

"For licencing details see kernel-base/COPYING" and similar license
references have no value over the SPDX identifier. Remove them.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: John Stultz <john.stultz@linaro.org>
Acked-by: Corey Minyard <cminyard@mvista.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: David Riley <davidriley@chromium.org>
Cc: Colin Cross <ccross@android.com>
Cc: Mark Brown <broonie@kernel.org>
Link: https://lkml.kernel.org/r/20181031182252.963632760@linutronix.de

include/linux/hrtimer.h

@@ -8,8 +8,6 @@
  *  data type definitions, declarations, prototypes
  *
  *  Started by: Thomas Gleixner and Ingo Molnar
- *
- *  For licencing details see kernel-base/COPYING
  */
 #ifndef _LINUX_HRTIMER_H
 #define _LINUX_HRTIMER_H

kernel/time/clockevents.c

@@ -5,9 +5,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 
 #include <linux/clockchips.h>

kernel/time/hrtimer.c

@@ -20,8 +20,6 @@
  *
  *	George Anzinger, Andrew Morton, Steven Rostedt, Roman Zippel
  *	et. al.
- *
- *  For licencing details see kernel-base/COPYING
  */
 
 #include <linux/cpu.h>

kernel/time/tick-broadcast.c

@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>

kernel/time/tick-common.c

@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>

kernel/time/tick-oneshot.c

@@ -6,9 +6,6 @@
  * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
  * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
  * Copyright(C) 2006-2007, Timesys Corp., Thomas Gleixner
- *
- * This code is licenced under the GPL version 2. For details see
- * kernel-base/COPYING.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>

kernel/time/tick-sched.c

@@ -7,8 +7,6 @@
  *  No idle tick implementation for low and high resolution timers
  *
  *  Started by: Thomas Gleixner and Ingo Molnar
- *
- *  Distribute under GPLv2.
  */
 #include <linux/cpu.h>
 #include <linux/err.h>

kernel/time/timer_list.c

@@ -3,10 +3,6 @@
  * List pending timers
  *
  * Copyright(C) 2006, Red Hat, Inc., Ingo Molnar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/proc_fs.h>