[FIX] stock: remove move 'without package' properly

on a picking, move_ids_without_package is a subset of move_lines.
The inverse function on move_ids_without_package only work well when we
add a move.

This commit improves the inverse function to take deletion into account

closes odoo/odoo#36558

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>