LU-16518 llite: remove unused ll_default_lmv_inherited()

LU-16518 llite: remove unused ll_default_lmv_inherited()

This function stopped being used in a previous patch, but it
was never removed. So let's remove it now.

Fixes: 388a185eace0 ("LU-15971 llite: implicit default LMV inherit")
Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: I7aef4ad1a08bf55abd6ec2cb906b4198dc3185f0
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/58352
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>