[Removal] Remove loot-crates feature.

[Bubbus]

Similar to #206.

Is your feature request related to a problem? Please describe.
I added loot-crates a long time ago so I could use it to make a scavenging mission. Since then it's gotten no use at all and just adds another thing to the config folder. It probably makes sense to keep the code around somewhere so it can be turned into a mod or a snap-in component, but it doesn't need to be a part of every CA mission's codebase.

Describe the solution you'd like
remov.

Why is this this best way to solve the problem?
cause then it'll be gone

Additional context
📦