ASoC: SSM2602: Remove duplicate control

There are currently two controls which allow selecting the capture source, one
as a normal control, the other as part of a DAPM_MUX widget.
Remove the normal control.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ssm2602.c

@@ -99,8 +99,6 @@ SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1),
 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
 
-SOC_ENUM("Capture Source", ssm2602_enum[0]),
-
 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
 };