crypto: crc32c - Remove more outdated usage information

Remove information from the crypto/crc32c.c file comment that is no
longer applicable now that nearly all users of CRC-32C are simply using
the crc32c() library function instead.  This continues the cleanup from
commit 0ef6eb1 ("crypto: Clean up help text for CRYPTO_CRC32C").

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260314173130.16683-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

Author: Eric Biggers

crypto/crc32c.c

@@ -1,8 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Cryptographic API.
- *
- * CRC32C chksum
+ * crypto_shash support for CRC-32C
  *
  *@Article{castagnoli-crc,
  * author =       { Guy Castagnoli and Stefan Braeuer and Martin Herrman},
@@ -15,16 +13,6 @@
  * pages =        {},
  * month =        {June},
  *}
- * Used by the iSCSI driver, possibly others, and derived from
- * the iscsi-crc.c module of the linux-iscsi driver at
- * http://linux-iscsi.sourceforge.net.
- *
- * Following the example of lib/crc32, this function is intended to be
- * flexible and useful for all users.  Modules that currently have their
- * own crc32c, but hopefully may be able to use this one are:
- *  net/sctp (please add all your doco to here if you change to
- *            use this one!)
- *  <endoflist>
  *
  * Copyright (c) 2004 Cisco Systems, Inc.
  * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>