ARM: defconfig: drop CONFIG_SND_SOC_FSL_SAI

This is selected by CONFIG_SND_SOC_FSL_ASOC_CARD=m, so the
extra line is redundant.

Fixes: 212e3b6b ("ARM: configs: Enable more audio support for i.MX")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -778,7 +778,6 @@ CONFIG_SND_ATMEL_SOC_I2S=m
 CONFIG_SND_BCM2835_SOC_I2S=m
 CONFIG_SND_IMX_SOC=m
 CONFIG_SND_SOC_FSL_ASOC_CARD=m
-CONFIG_SND_SOC_FSL_SAI=m
 CONFIG_SND_PXA_SOC_SSP=m
 CONFIG_SND_MMP_SOC_SSPA=m
 CONFIG_SND_PXA910_SOC=m