Remove validator tests

[gsnedders]

These haven't been updated in years, so I assume they're not actually correct vis-à-vis the spec. Additionally, the only real HTML validator currently maintained (to my knowledge) is Validator.nu, which has its own testsuite. @hsivonen, @sideshowbarker?

[sideshowbarker]

Yeah, I guess we should try to port these over to the test suite that we use for the validator. I have some tests in https://github.com/w3c/web-platform-tests/tree/master/conformance-checkers/html/parser but not many.

[jmdyck]

Validator.nu, which has its own testsuite.

http://wiki.whatwg.org/wiki/Validator.nu_Unit_Tests seems to indicate that Validator.nu doesn't have a test suite of its own; it relies on tests in html5lib and "the WHATTF HTML5 schemas".

For Google Summer of Code 2013, the W3C proposed a project to "add a test suite for HTML5 to the Validator.nu project" http://www.w3.org/2013/03/gsoc2013#validator-nu-testing, but Google didn't accept it.

[sideshowbarker]

http://wiki.whatwg.org/wiki/Validator.nu_Unit_Tests is out of date. There's an actively maintained test suite at https://github.com/w3c/web-platform-tests/tree/master/conformance-checkers/html/

[gsnedders]

@sideshowbarker Can I shove this at you to move everything over, so we can nuke it here?

[hsivonen]

My understanding is that these tests were for Mark Pilgrim's html5lib-based validator, which never got beyond the first (or first couple of) hacking sessions. Validator.nu has the beginnings of testing infrastructure but not really a test suite to speak of.

Anyway, if these tests are out of date anyway, I'm OK with removing them.