Fixes Queen xenos not automatically climbing ledges

[SabreML]

About the pull request

Makes Queen xenomorphs automatically climb ledges like normal, instead of having to manually click+drag their sprite onto it. (Resolves #5589)

This was done by just removing the caste's Collide() override, since as far as I've been able to tell it's something left over from the old 'Charge' ability.
(When it was first added in 3b0bce5 it had some charge_speed and charge_dir checks, then those got commented out in 277f424, then eventually they were removed entirely and the proc was renamed to Collide() in bcfa342.)

In its current state I'm not sure that it's actually doing anything other than overriding the parent procs.

Explain why it's good for the game

I can't speak from personal experience since I actively avoid playing Queen, but from what I've heard from others it can be really irritating to get stuck on a ledge and have to sort of pixel hunt behind your massive sprite in order to climb over. Especially since, as said in the issue, a xeno as big as the Queen should really have no trouble just stepping over it.

Testing Photographs and Procedure

Screenshots & Videos

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Changelog

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fix: Made the Queen able to automatically climb ledges.
/:cl: