thermal: cpu_cooling: Don't check is_cpufreq_valid()

Because get_cpu_frequency() has returned a valid frequency, it means that the
cpufreq policy is surely valid and so no point checking that again with
is_cpufreq_valid(). Get rid of the routine as well as there are no more users.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/cpu_cooling.c

@@ -110,23 +110,6 @@ static void release_idr(struct idr *idr, int id)
 
 /* Below code defines functions to be used for cpufreq as cooling device */
 
-/**
- * is_cpufreq_valid - function to check frequency transitioning capability.
- * @cpu: cpu for which check is needed.
- *
- * This function will check the current state of the system if
- * it is capable of changing the frequency for a given @cpu.
- *
- * Return: 0 if the system is not currently capable of changing
- * the frequency of given cpu. !0 in case the frequency is changeable.
- */
-static int is_cpufreq_valid(int cpu)
-{
-	struct cpufreq_policy policy;
-
-	return !cpufreq_get_policy(&policy, cpu);
-}
-
 enum cpufreq_cooling_property {
 	GET_LEVEL,
 	GET_FREQ,
@@ -300,8 +283,7 @@ static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device,
 	cpufreq_device->cpufreq_state = cooling_state;
 	cpufreq_device->cpufreq_val = clip_freq;
 
-	if (is_cpufreq_valid(cpu))
-		cpufreq_update_policy(cpu);
+	cpufreq_update_policy(cpu);
 
 	return 0;
 }