Revert "[SW-2708] Fix Py4J classloader jar inject (#2768)"
Revert "[SW-2708] Fix Py4J classloader jar inject (#2768)"

This reverts commit 0e5d3ac5532da454202d755ecdd6cf9b68e95d27.

h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water