"contains with false if subschema" in draft 6 shouldn't be applicable - "if" was not defined until draft 7

[jimmylewis]

I'm working on an implementation for draft 6, and noticed this test (added in #485). I'm guessing it was oversight to add this to draft 6. For convenience, I've copied the test fragment here:

{
    "description": "contains with false if subschema",
    "schema": {
        "contains": {
            "if": false,
            "else": true
        }
    },
    "tests": [
        {
            "description": "any non-empty array is valid",
            "data": ["foo"],
            "valid": true
        },
        {
            "description": "empty array is invalid",
            "data": [],
            "valid": false
        }
    ]
}

With "if" and "else" not defined in draft 6, this schema is equivalent to "contains": {}, making it redundant with the "contains keyword with boolean schema true" test.

[jdesrosiers]

You're correct, this test is included by mistake. If you have a chance to send us a PR with the fix, we'd appreciate it.