Allow removal of target groups from ASGs (#25126)
Allow removal of target groups from ASGs (#25126)

An empty `target_group_arns` list represents no target groups.
This is different to not passing a `target_group_arns` list at all
which can signify no change.

Remove unnecessary empty list construction, as it must already be
an empty list to get to that point.
thaim/ansible,thaim/ansible