i2c: qcom-cci: Remove unused struct member cci_clk_rate
The removal of the supply clock rate check implies a need to remove
some unnecessary left-over data from the driver as well.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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