* made the test that leaves a feature plot around clean up its mess
* made the test that leaves a feature plot around clean up its mess

mxlei01/healthcareai-py,jpo/healthcareai-py,jpo/healthcareai-py,HealthCatalystSLC/healthcareai-py,HealthCatalyst/healthcareai-py,mxlei01/healthcareai-py,HealthCatalyst/healthcareai-py,HealthCatalystSLC/healthcareai-py