Remove publisher_confirms & confirm_nack from mirrored_queue tests

Conclusion of the following conversation:

- Gerhard Lazu: what should we do about these recurring test failures?
              https://github.com/rabbitmq/rabbitmq-server/runs/548636403?check_suite_focus=true#step:6:185
              == publisher_confirms_parallel_SUITE ==
              publisher_confirms_parallel_SUITE > publisher_confirm_tests > mirrored_queue > publisher_confirms
                  #1. {error,{noproc,{gen_server,call,
                                                 [<0.393.0>,
                                                  {wait_for_confirms,5000},
                                                  infinity]}}}
              publisher_confirms_parallel_SUITE > publisher_confirm_tests > mirrored_queue > confirm_nack
                  #1. {error,
                          {{badmatch,received_ack_instead_of_nack},
                           [{publisher_confirms_parallel_SUITE,confirm_nack,1,
                                [{file,"test/publisher_confirms_parallel_SUITE.erl"},
                                 {line,247}]},
                            {test_server,ts_tc,3,[{file,"test_server.erl"},{line,1562}]},
                            {test_server,run_test_case_eval1,6,
                                [{file,"test_server.erl"},{line,1080}]},
                            {test_server,run_test_case_eval,9,
                                [{file,"test_server.erl"},{line,1012}]}]}}

- Karl Nilsson: I always suspected that test to be racy

- Gerhard Lazu: In which case, I would like to delete it. Does someone want to fix it instead?

- Karl Nilsson: How do we know the queue exits after the channel processing the publish but before the queue mirrors sending all acks the and ch returning with ack

- Michael Klishin: If there is no way to make it not racy or something like Jepsen would make more sense to test this kind of thing, we can simply delete the test

- Karl Nilsson: Great point Michael, the Jensen suite should provide some coverage of this.

- Karl Nilsson: I think we are safe to remove these tests, at least the ones using mirroring

- Michael Klishin: Please go ahead and remove them

Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>

0 files changed, 0 insertions, 0 deletions