ARM: exynos: Remove no longer needed s3c_pm_check_*() calls

Since commit 6862fdf2 ("ARM: samsung: Limit SAMSUNG_PM_CHECK
config option to non-Exynos platforms") s3c_pm_check_*() calls
are redundant and can be removed.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>