ByteStreamTest: migrate tests to CA
CA migration and cleanup of the unit tests:
- Remove BadEvents tests as we don't use that feature and the input file did not even contain bad events.
- Migrate SkipOne and SkipNone test but only run on 10 events.
- Migrate Selector to EvenEvents test and fix the EvenEventsSelectorTool to actually select even events instead of odd ones.
Also delete some other unused legacy files.
cc @gemmeren