crypto: Clean up help text for CRYPTO_SHA256

NFS, Ceph, SMB, and Btrfs stopped using this SHA-256 implementation in
commits c2c90a8 ("nfsd: use SHA-256 library API instead of
crypto_shash API"), 27c0a7b ("libceph: Use HMAC-SHA256 library
instead of crypto_shash"), 924067e ("ksmbd: Use HMAC-SHA256
library for message signing and key generation"), and fe11ac1
("btrfs: switch to library APIs for checksums").

Signed-off-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/bf8e1c229b36fc5349e29701e962d0dfd4fd21b6.1772116160.git.geert+renesas@glider.be
Signed-off-by: Eric Biggers <[email protected]>

Author: geertu

crypto/Kconfig

@@ -963,7 +963,6 @@ config CRYPTO_SHA256
 	  10118-3), including HMAC support.
 
 	  This is required for IPsec AH (XFRM_AH) and IPsec ESP (XFRM_ESP).
-	  Used by the btrfs filesystem, Ceph, NFS, and SMB.
 
 config CRYPTO_SHA512
 	tristate "SHA-384 and SHA-512"