cpufreq: s3c: remove last use of resume_clocks callback

Commit 32726d2d ("ARM: SAMSUNG: Remove legacy clock code")
already removed the callback pointer, but there was one remaining
user:

drivers/cpufreq/s3c24xx-cpufreq.c: In function 's3c_cpufreq_resume_clocks':
drivers/cpufreq/s3c24xx-cpufreq.c:149:14: error: 'struct s3c_cpufreq_info' has no member named 'resume_clocks'
  cpu_cur.info->resume_clocks();
              ^

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 32726d2d ("ARM: SAMSUNG: Remove legacy clock code")
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 3.17+ <stable@vger.kernel.org> # v3.17+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>