ASoC: davinci-vcif: Use devm_snd_soc_register_component

Use resource managed function devm_snd_soc_register_component for
component registration instead of snd_soc_register_component.

Also, remove davinci_vcif_remove as it is now redundant.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>