1.7.1 BETA : Pirate raids seemingly still non-functionnal

Rewan#2358

Threw a Pirate raid at Gongsun Du. No declaration of war so I'm guessing this faction council mission is still a money trap. Either fix or remove the pirate raids.

cf : https://forums.totalwar.com/discussion/285829/pirates-raids-are-non-functionnal#latest

Rewan#2358

If the dev' team doesn't have any idea on why this doesn't work just try switching the thinking around : perhaps the problem is not the script by itself but where the armies are in fact spawned.

Land looters spawn properly, so instead of spawning the pirates in the sea, try putting them on land instead.