ASoC: cs35l56: Don't return a value from cs35l56_remove()

cs35l56_remove() always returns 0. Two of the functions that call
it are void and the other one should only return 0. So there's no
point returning anything from cs35l56_remove().

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230414133753.653139-6-rf@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>