[ARM] pxa: remove useless pxa_pm_finish() function

pxa_pm_finish() does nothing but return zero.  The core code
does nothing with this return value, and will not try to call
the finish method in the pm_ops structure if it is NULL.

Therefore, we can remove this useless function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/common/sharpsl_pm.c

@@ -768,7 +768,6 @@ static void sharpsl_apm_get_power_status(struct apm_power_info *info)
 static struct pm_ops sharpsl_pm_ops = {
 	.prepare	= pxa_pm_prepare,
 	.enter		= corgi_pxa_pm_enter,
-	.finish		= pxa_pm_finish,
 	.valid		= pm_valid_only_mem,
 };