Also removed the rdapWhoisServer value, as it's just null and will likely stay that way (it isn't mentioned in the RDAP response profile)
If it'll ever become required, we can add it back.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=247643981
Currently we try to reimplemnet the same behavior of the existing code as much
as possible.
We only fix issues that go against the RFC7483, but we don't yet update the
code to follow the latest (15feb19) RDAP Response Profile. That will require a
much bigger change especially for the test files, so it'll wait for a followup
CL.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=246948018