How to stop Lambda from incurring CloudTrail charges related to CreateLogStream?
It looks like you can use Advanced Event Selectors on the trail config to exclude/include specific sources, lambdas, etc. for data events.
Update: I've tested this myself. I can create a trail to monitor all Lambda (data) events, with a filter for a specific one. I can then invert the filter to exclude that one. But I'm not sure if it's going to exclude the actual createLogStream calls, as that might be on a different object.