Remove some dead code from the test.

http://git.debu.gs/gitweb/?p=hoshi;a=commitdiff;h=a36da30f2214767376df9725151a2efdffb406c4
code, git.debu.gs | 2017-06-27 21:24:43 +0000 GMT | No.717

Remove some dead code from the test.

[D H] test/html5_test.rb