ext4: remove unnecessary ifdefs in htree_dirblock_to_tree()

The ifdefs for CONFIG_FS_ENCRYPTION in htree_dirblock_to_tree() are
unnecessary, as the called functions are already stubbed out when
!CONFIG_FS_ENCRYPTION.  Remove them.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20191209213225.18477-1-ebiggers@kernel.org


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>