ARM: SAMSUNG: remove sdhci default configuration setup platform helper

The sdhci platform helper function that sets up the default controller
configuration is removed for all Samsung platforms since such default
controller configuration can be handled by the driver.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>