Hi Heather,
go to CWIS > Scan and select your template at left then scroll way down the page to the Report options area and click Edit
Make sure the Job Log option is not selected (hint: it is by default) and click save.
Then do so for all the other templates, and then go to CWIS > Properties > Services > Workflow Scanning > Default Template
and change the same thing, that way it won't happen by default on new templates created later.
If you just use the default template, do only step 2.