Remove a problematic makeWeapon call for enemies dropping specific weapons

Based on a mod made by Zoraxua recently: https://gamebanana.com/mods/405868 Heres a quote from a comment in the mod detailing the problem, slightly edited to provide context: "[The makeWeapon call after the wpn existance check is] retried here, so, it genertes a bunch of nothing if [the previous makeWeapon call is] not commented out, Which is why it errors [on the following maxrarity line] with a weird value."