github: remove diagnostics from notices

[mcollina]

I don't think adding diagnostic info as "notice" is helpful. It would cause a reduction in the use of diagnostics, which can be helpful.

This is likely related to #109.

[MoLow]

@mcollina you would have preferred to only see these in the stdout/spec/tap reporter?

[mcollina]

yes exactly

[MoLow]

@mcollina I have released a new version to npm, can you check if the latest changes make more sense and if you still feel this is needed?

[mcollina]

I would still prefer not to see them, but maybe put it behind an env? I can see folks using this.