Interesting.
Fired up the Terrans and let the game autodesign a ship for me, wound up with Star Fury M1. (To my knowledge there are no longer premade weapon ships in TA. If you are still able to see premade weapon ships without using the autodesigner, tell me how I can get there so I can compare.)
While I am in fact able to see a second laser on the tiny hull (and there's no way in hell it would fit), it does not take up space nor does it contribute to the attack value. This is the case regardless of whether or not I have researched Laser-at the time of the initial test I only had particle beam via space weapons.
I also see a support module and a sensor module on the ship design, that do not take up space nor give the ship design, even in the shipyard/ship designer, any bonuses. I'm seeing 2pc sensor radius and 0.1 sct range both before and after removing them. (Tiny galaxy for testing purposes by the way, in case that range seems low.)
The interesting part is that when I go to actually build the ship, the only component on it is the aforementioned particle beam. The phantom laser that isn't providing any attack doesn't show up, and the basic support and sensors don't show up, either.