Remove golang v1.0 from Testing.

Testing against golang v1.0 on travis-ci tends to time out and require
manual restarting. The code has passed against every other golang
version when this occurs so I am chalking it up to improvements in the
runtime/networking stack and removing 1.0 as an unnecessarily outdated
version of go with the 1.3 release coming soon and 1.2.1 as the current
stable release.