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