ARM: multi_v7_defconfig: remove duplicate CONFIG_COMMON_CLK_QCOM=y

commit dcf9a03b (ARM: multi_v7_defconfig: Enable PMIC and MUIC
drivers for exynos) mistakenly added an duplicate line for
CONFIG_COMMON_CLK_QCOM=y.  Remove it.

Signed-off-by: Kevin Hilman <khilman@linaro.org>