ASoC: cs35l33: Remove unnecessary free_irq call

Current code uses devm_request_threaded_irq() so it does not need to
explicitly call free_irq() in .probe error path and .remove.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Paul Handrigan <Paul.Handrigan@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>