ASoC: atmel: sam9g20_wm8731: remove useless include

A mach/ header is included but never used. Simply remove it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed