Get rid of Beaker-native result reporting

[comps]

In ba9fcc7, we worked around tcms-results's inability to treat None / Skip / etc. as a non-failure state.

In earlier commits, ie. 0816e61 we at least added the original result to the result name (message), but it would be best if we could just use native Beaker statuses, like before.

With TCMS gone (also #151), we can restore the Beaker-native reporting API.

Alternatively, we may just remove it and rely on TMT only.

[comps]

Alternatively, we may just remove it and rely on TMT only.

This.

[comps]

Also close #177 when done.