updated UITest to clear the test folder of all json files before a gui test
updated UITest to clear the test folder of all json files before a gui test

HyungJon/HubTurbo,Honoo/HubTurbo,saav/HubTurbo,gaieepo/HubTurbo,Sumei1009/HubTurbo,Honoo/HubTurbo,gaieepo/HubTurbo,saav/HubTurbo,ianngiaw/HubTurbo,HyungJon/HubTurbo,ianngiaw/HubTurbo,Sumei1009/HubTurbo