NFFS support removal
NFFS support will be removed from the zephyr-project codebase.
It was decided to take such action as NFFS has few serious issue which made it unreliable (Such issues were not fixed since a long time, after deep analyze: need a lot of effort to be fixed).
As Litlefs support is available in the zephyr since while it doesn't make any sense to keep NFFS support as it lost even education value: LitleFS is better substitute.
Littlefs is one of zephyr VFS backend, so application level API is the same as was for NFFS.