Unused traits in code examples

[amab8901]

The code examples on this page import the traits Streamer and IntoStreamer. But apparently, these traites aren't being used after they have been imported.

I suggest doing one of the following:

1. remove the imports of Streamer and IntoStreamer traits from the code examples
2. explain why those traits are necessary and how they are being implicitly used (if that's the case) in the code example