Review use of old Das2Stream parser and remove its use

[jbfaden]

I discovered that Autoplot is still using the old Das2Stream parser, and I need to figure out why this is the case. We have a new Das2Stream parser that goes straight to QDataSet which should satisfy all needs, but apparently doesn't.

[jbfaden]

See #155 where we discovered the old BIN_MIN and BIN_MAX were not working.