LU-12275 sec: remove bio functions in fscrypt compat

LU-12275 sec: remove bio functions in fscrypt compat

Remove libcfs/llibcfs/crypto/bio.c since direct block device access
is not needed for client builds, and the use of stuct bio on the
client adds unnecessary complexity to portability.

Lustre-change: https://review.whamcloud.com/50023
Lustre-commit: d328818a456daf30c20c8df0aa0be9dd2a2b6a9e

Test-Parameters: trivial
Fixes: a813e8187 ("LU-12275 sec: add llcrypt as file encryption library")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I97642dfd85053b9ea4196374f2002ffb6a2540e5
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50140
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>