cpufreq: sh: Remove unused linux/sched.h headers

Since commit '205dcc1ecbc5(cpufreq/sh: Replace racy task affinity logic)'
the header <linux/sched.h> is useless in sh-cpufreq.c, so remove it.

Signed-off-by: Hailong Liu <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: Hailong Liu

drivers/cpufreq/sh-cpufreq.c

@@ -23,7 +23,6 @@
 #include <linux/cpumask.h>
 #include <linux/cpu.h>
 #include <linux/smp.h>
-#include <linux/sched.h>	/* set_cpus_allowed() */
 #include <linux/clk.h>
 #include <linux/percpu.h>
 #include <linux/sh_clk.h>