ROM Hack Where to find the script that releases the Latias/Latios in Pokémon Emerald?

[Foxes]

I've added both Latias and Latios as static encounters, so I'd now like to remove the roaming one so that there aren't duplicates. I assume it would just be a case of removing a special from a script like removing the roaming legendary beast is in FireRed, but I can't actually find the script that activates it in the first place. I've looked through all of the scripts in the player's house but none of them include the part where your mum asks you what colour the Pokémon on TV was. If anyone knows where I can find this script, and how I can remove the roaming Pokémon if I need to do anything different for that, I'd greatly appreciate it. I've also used AdvanceText to try and find it, which leads me to the offset 0x1F8351, but that script isn't it.