Fix repair ui getting stuck on composite plating/rams

[irwiss]

Summary

None

Purpose of change

Recent change on military composite plating put NO_REPAIR flag, which is confusing vehicle code, this fixes it so it doesn't

Describe the solution

Removes "repair" key from "requirements" so vehicle UI isn't getting stuck on repairing composite

Describe alternatives you've considered

Removing the misleading flag is apparently invalid

Testing

Spawn lightly damaged humvee, see r brings you to repair plating but shows repairing disabled message similar to attached screenshot.
Apply patch, do the above, you should not be able to select the plating at all (or any other non-repairable part) when in 'r' mode.

Additional context

[anothersimulacrum]

I think the flag may be useful to have as a flag to give an error during load if a part with it has repair info.

Regardless of that, I don't think the test is a useful test to have.

[irwiss]

The test is the error though, even before a player is loading the game; if someone wants to specify vpart can't be repaired and goes for the 'naive'/obvious solution of reusing item flag instead of deleting 'repair' key - the PR will fail tests and PR author will get the correct solution displayed as test failure message

[anothersimulacrum]

The test is not useful because nobody is going to be adding the flag if it's not used anywhere and not mentioned in the documentation (which it should be, I assume that not happening here is an unintentional omission). This kind of thing can be useful, but it needs to occur during JSON validation/loading, not in a test (and generally not for a single specific flag), because the vast majority of people editing JSON are not running the tests, and are especially not doing it immediately after adding something, so it essentially only provides feedback to people who haven't tested their PR before pushing it. We do this sort of flag validation with items (and I believe monsters).

Having the flag remain as a method to opt in to error reporting in the case that for some reason a part has repair defs it should not is useful, because "I am able to repair a part I shouldn't be able to" is not an issue that is liable to be reported or even known is an issue.

[irwiss]

Well this goes beyond the scope of my caring at this point, so i adjusted this to just fix the issue that bothered me - the vehicle repair ui no longer gets stuck on composite stuff the player can't repair