Robotic Repair Missing fixes [Fixes #2326]

- Moves Robotic repair stuff to the two item's respected attack()'s
- Removed them from the human_defense.dm


Yay for everything I ever added to human_defense being removed because to be fair that was a shit place to put it!


Another Augmentation bug fixed, but when will @Aranclanos love me?

Thanks to @Tenebrosity for reporting this.

Fixed a (most likely) unknown issue with cable coils and messages, it's Del(), proc stopping shenanigans - Thanks @Perakp for pointing it out.