staging: greybus: audio_helper: remove unused and wrong debugfs usage
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.150 by commit d0febad83e29d85bb66e4f5cac0115b022403338. For more details please see the references link.