Ignore PADherder 'jp_only' flag

[madcowfred]

As per title, just add monsters even if the PADherder data claims JP only. Nothing on PADherder's end actually cares if they are or not, it just means I get "X's name is in Japanese" reports rather than PADLISTENER DON'T WORK :person_frowning:

[JamesCID]

And I'm one of the buggers reporting those issues, so I second it.

[Neraud]

I added the jp_only check to prevent issues with monsters being released in JP with ids already used in NA (I still have nightmares about the BAO monsters ;p). In this case, I suppose the monsters will first be created with only an id_jp and jp_only = true, and then it would be updated with an id_us and jp_only = false.
But it seems it's causing issues to prevent something that should not happen.

I'll remove it.