cpufreq: interactive: Remove unnecessary cpu_online() check

Cpufreq no longer calls governor callback for offlined cpus. i.e. All
policy->cpus are guaranteed to be online. Hence we don't need explicit check to
see if cpu is online or not.

Change-Id: I9ad85ea4addd5b4a40952e59ed730dd15e328690
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Git-commit: ad818d962134c16b1d8aff56edc8a2c4e12fa7b7
Git-Repo: https://android.googlesource.com/kernel/common.git


Signed-off-by: Junjie Wu <junjiew@codeaurora.org>