[MERGED PR] prevent unscrewing the nuclear bomb from nukeops mode

[Lady Birb]

Yeah as ZeWaka said it seems like this is a nerf towards crew borgs from zipping into the fight and unscrewing the nuke and then zooming out into a pod with the nuke to bring it outside the Zlevel.
Personally I hate when that happens so I'm for this PR

Yeah. Too many crew victories in nukeops rounds are cause a forceshielded lightborg ran in, unscrewed the nuke while invincible, then flew off the zlevel.

(remove borg forceshields 2day)