Removes unintended hullwalls on LV522, Removes some ledges on LV522 (#…

…5952)

# About the pull request

This PR cleans up some ledges that were in high combat areas and removes
unintended hullwalls

Remember: something that is self-evident to you might not be to others.
Explain your rationale fully, even if you feel it goes without saying.
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# Explain why it's good for the game

Ledges in high combat areas can be incredibly annoying for both sides
and the hullwalls were the same wall type as the walls surrounding them
leading to some player confusion


# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl: SpartanBobby
maptweak: Removes some ledges on LV522
maptweak: Removes unintended hullwalls on LV522

/:cl: