This reverts commit cc5ad09caa.
cc5ad09caa
apps/examples/i2sloop: Add i2sloop application This application can be used to test I2S loopback nsh> i2sloop & Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com> Approved-by: Gregory Nutt <gnutt@nuttx.org>