ARM: EXYNOS: remove the MMC_CAP2_BROKEN_VOLTAGE

According to commit 421fc8e70079 ("mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE
with test for fixed regulator"), we don't need to set MMC_CAP2_BROKEN_VOLTAGE.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: changed log description]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>