Revert "Test tip on travis"
Revert "Test tip on travis"

This reverts commit 733243bbfbb6a36e5436539d85df3171ba13ec7c.

Some of our tests assume locations of symbols in GOROOT

sourcegraph/go-langserver,sourcegraph/go-langserver,lambdalab/go-langserver,sourcegraph/go-langserver,lambdalab/go-langserver,lambdalab/go-langserver