Removing dependency on dart binary from go.sh.

Removing dependency on dart binary from go.sh.

This at the same time kills all of the generated HTML lib documentation.
This documentation will be restored when the new HTML JSON docs are done.
ETA: 2 weeks

Committed: https://code.google.com/p/dart/source/detail?r=17086

[Andrei Mouravski, 2013-01-15 18:47:10]

I am temporarily killing the old HTML JSON docs, which kind of sucks, but it's
causing problems and has only been half working for some time anyway. All of
this will be fixed in 2 weeks.

[Emily Fortuna, 2013-01-15 18:52:15]

the diff for one of those files isn't available -- "Upload in progress"
can you try uploading again?

[Emily Fortuna, 2013-01-15 19:49:27]

"lgtm"