[html-tests] Remove the requirement to implement showModalDialog from window-properties.html. (#1122)

The future of this feature is uncertain, and there is no good reason for this
test to require it. However, if it is implemented, we'll still test that it's
implemented correctly.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1122

Received on Saturday, 26 July 2014 09:43:42 UTC