Remove get_nogo from context (#4029)

**What type of PR is this?**
Cleanup

**What does this PR do? Why is it needed?**
It seems odd to hang helpers off the `go` context because they still
need to take `go` as a param. It's clearer to just import them.

**Which issues(s) does this PR fix?**

Fixes #

**Other notes for review**
2 files changed