thermal/drivers/clock_cooling: Remove clock_cooling code

clock_cooling has no in-kernel users. It has never found any use in
drivers as far as I can tell.

Remove the code.

Signed-off-by: Amit Kucheria <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/aa5d5ac2589cf7b14ece882130731b4a916849a6.1593619943.git.amit.kucheria@linaro.org

Author: idlethread

drivers/thermal/Kconfig

@@ -190,16 +190,6 @@ config CPU_IDLE_THERMAL
 	  idle cycle.
 endif
 
-config CLOCK_THERMAL
-	bool "Generic clock cooling support"
-	depends on COMMON_CLK
-	depends on PM_OPP
-	help
-	  This entry implements the generic clock cooling mechanism through
-	  frequency clipping. Typically used to cool off co-processors. The
-	  device that is configured to use this cooling mechanism will be
-	  controlled to reduce clock frequency whenever temperature is high.
-
 config DEVFREQ_THERMAL
 	bool "Generic device cooling support"
 	depends on PM_DEVFREQ

drivers/thermal/Makefile

@@ -25,9 +25,6 @@ thermal_sys-$(CONFIG_THERMAL_GOV_POWER_ALLOCATOR)	+= gov_power_allocator.o
 thermal_sys-$(CONFIG_CPU_FREQ_THERMAL)	+= cpufreq_cooling.o
 thermal_sys-$(CONFIG_CPU_IDLE_THERMAL)	+= cpuidle_cooling.o
 
-# clock cooling
-thermal_sys-$(CONFIG_CLOCK_THERMAL)	+= clock_cooling.o
-
 # devfreq cooling
 thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o