ASoC: wcd9335: remove unnecessary sample rate check condition

During device switch order of sample rate configuration
would be different. Hence remove the unnecessary check
condition so as to configure the spline src.

Change-Id: I1d5afdaedc1bcb42bf5a1454aa2e6600e6b963c0
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>