Removed Panel Kludge from Pickle/Msgpack tests
@jreback @jbrockmendel 

Recreated pickle file for 0.20.3 using Python 3.5.2 on Mac. Created msgpack file anew (previously 0.19 was last version tested)

Lots of follow ups can be done here including:

  - Automatically generating one of these files as part of build process
  - Decoupling script from test requirements (fixturization and break off)

Can also add more platforms / versions here as required but this should be a good starting point
Hello @WillAyd! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:











There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2019-06-27 20:16:22 UTC need a note for mspack as well. thanks @WillAyd 