If you look towards the bottom of the file, under the section usually called "core pindle run" or something similar, you'll see something that may look like this:
if(Merc.IsDead)
{
TalkToQualKehk();
Move(5078, 5079);
}
simply add a /* inf front of the "if(mercd.isdead) and a */ after that last "}". This should comment out the whole section and it won't be read. This is safer than deleting it, because you might **** up and delete the wrong thing. By commenting, the worst you can do is halt the script with an error.