I am writing a python script that will update a service definition in ArcGIS Online - to synchronize changes made by Desktop users. One question/answer that I found suggested 'deleting a service before publishing a replacement service, rather than overwriting'. I can't seem to find the right syntax to delete the old service definition. I'm assuming it uses ArcRest, but I can't seem to figure out how to code this. Any help would be appreciated. I am new to using ArcRest.