cpu/hotplug: Remove obsolete notifier macros

commit 530e9b76 ("cpu/hotplug: Remove obsolete cpu hotplug
register/unregister functions")' removed the below macros:

- #define CPU_UP_CANCELED 0x0004 /* CPU (unsigned)v NOT coming up */
- #define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */
- #define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going down */

But "CPU_UP_CANCELED_FROZEN, CPU_DOWN_PREPARE_FROZEN and
CPU_DOWN_FAILED_FROZEN" still refer to them, and nobody uses these "FROZEN"
macros now, so remove them too.

Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Cc: bigeasy@linutronix.de
Cc: jinyanjiang@gmail.com
Link: https://lkml.kernel.org/r/20171024062341.179678-1-yanjiang.jin@windriver.com