crypto: Clean up help text for CRYPTO_BLAKE2B
Btrfs stopped using this BLAKE2b implementation in commit
fe11ac191ce0ad91 ("btrfs: switch to library APIs for checksums").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/98b983d2f2bddf0e5e8e1c970446c3c64527ef89.1772116160.git.geert+renesas@glider.be
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
authored by