thermal: gov_step_wise: Delete obsolete comment

Commit 4102c4042a ("thermal/core: Remove DROP_FULL and RAISE_FULL")
removes support for THERMAL_TREND_RAISE_FULL/DROP_FULL but leaves the
comment unchanged.

Delete the obsolte comment about THERMAL_TREND_RAISE_FULL/DROP_FULL.

Fixes: 4102c4042a ("thermal/core: Remove DROP_FULL and RAISE_FULL")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/gov_step_wise.c

@@ -21,19 +21,11 @@
  *    a. if the trend is THERMAL_TREND_RAISING, use higher cooling
  *       state for this trip point
  *    b. if the trend is THERMAL_TREND_DROPPING, do nothing
- *    c. if the trend is THERMAL_TREND_RAISE_FULL, use upper limit
- *       for this trip point
- *    d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit
- *       for this trip point
  * If the temperature is lower than a trip point,
  *    a. if the trend is THERMAL_TREND_RAISING, do nothing
  *    b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
  *       state for this trip point, if the cooling state already
  *       equals lower limit, deactivate the thermal instance
- *    c. if the trend is THERMAL_TREND_RAISE_FULL, do nothing
- *    d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit,
- *       if the cooling state already equals lower limit,
- *       deactivate the thermal instance
  */
 static unsigned long get_target_state(struct thermal_instance *instance,
 				enum thermal_trend trend, bool throttle)