Which old files can I delete from my \config directory

Which files below are safe to delete in the \config directory? I’m on Home Assistant 2022.7.6.

OZW_Log.txt
zwcfg_0xc0c81975.xml
zwscene.xml
pyozw.sqlite

Also, I’m pretty sure I need the below file still for the google calendar integration; however, I’m not certain. Can someone please tell me if this is still needed:
.google.token