PM: Clean up PM_TRACE dependencies and drop unnecessary Kconfig option

CONFIG_PM_SLEEP_ADVANCED_DEBUG is not used any more, so drop it
and CONFIG_CAN_PM_TRACE need not depend on EXPERIMENTAL, so remove
that dependency.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>

kernel/power/Kconfig

@@ -140,11 +140,6 @@ config PM_ADVANCED_DEBUG
 	fields of device objects from user space.  If you are not a kernel
 	developer interested in debugging/testing Power Management, say "no".
 
-config PM_SLEEP_ADVANCED_DEBUG
-	bool
-	depends on PM_ADVANCED_DEBUG
-	default n
-
 config PM_TEST_SUSPEND
 	bool "Test suspend/resume and wakealarm during bootup"
 	depends on SUSPEND && PM_DEBUG && RTC_CLASS=y
@@ -158,7 +153,7 @@ config PM_TEST_SUSPEND
 
 config CAN_PM_TRACE
 	def_bool y
-	depends on PM_DEBUG && PM_SLEEP && EXPERIMENTAL
+	depends on PM_DEBUG && PM_SLEEP
 
 config PM_TRACE
 	bool