remove conditional $id tests from draft 6

[gregsdennis]

Fixes https://github.com/json-schema-org/JSON-Schema-Test-Suite/pull/383/files#r907940838

These tests use if/then/else which weren't introduced to draft 7. We need to remove these from draft 6.

[Julian]

I have to stare at these again tomorrow but I suspect they're still salvageable without using if/then/else -- those are being used out of convenience but I don't think they're part of the purpose of the test -- probably using oneOf or allOf would work

[gregsdennis]

That's fine, but I just wanted to resolve these being incorrect. My build is failing because of these.

I can try to rework them in terms of oneOf. (Would be really nice to have a linter....)

[Julian]

It looks like the linter that should catch this isn't running properly for draft 2019 :/ I'll look at why tomorrow.

[Julian]

#563 updates the sanity checker to properly run but... it wouldn't have helped unfortunately for catching the mistake, since the schemas aren't actually invalid (since the properties are supposed to be ignored).

#540 is really the kind of thing that'd possibly help, which we're working towards.