ASoC: wcd: Do not use micbias for removal interrupt

From cajon codec onwards, there is no need to keep micbias enabled
for removal interrupt. The hardware issue has been fixed in this
codec.

Change-Id: I810d65556e13a5994e7879eb00c7c67ea951355e
Signed-off-by: Simmi Pateriya <simmip@codeaurora.org>