Remove adapters/twisted_connection.py due to lack of test coverage. (pika v1.0.0 release target)

The twisted_connection module was added in 2011, but to this date still has no meaningful test coverage. It’s unmaintainable without comprehensive test coverage and therefore pika cannot release v1.0.0 with twisted_connection in it.

We literally don’t know whether it works at all at this point and which API methods are working/broken.

I am hoping that this issue will inspire someone with interest in the twisted adapters to add comprehensive test coverage shortly. Barring that, twisted_connection must be removed from the package.

See the following for examples of pika acceptance test suites:

• https://github.com/pika/pika/blob/master/tests/acceptance/async_adapter_tests.py
• https://github.com/pika/pika/blob/master/tests/acceptance/blocking_adapter_test.py

See also issues #615 and #616.

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Thanks so much to @abompard for keeping the Twisted dream alive! 🎉

[wulczer]

Thank you indeed @abompard - and apologies for not keeping up with the maintenance of the adapter. Three cheers for the Twisted community!