remove bloodling Invisibility

[misto]

when ive encountered them theyre either slaughtered me (as a human not equipped with thermals) or i desperately tried to wall/bolt them in somewhere (as a cyborg, borgs can see them too). they really throw a crew for a fuckin loop, and although it can be sad to be fucked up by them with minimal chance to fight back, its not like this game isnt chiefly built around getting instakilled or may-as-well-be-instakilled-because-youre-stunned-and-cant-fight-back combat in nearly all other aspects, and i would be sad to see them go, seeing ppl scurry from them shrieking is good fun