We decided to remove ClientIP's altogether from Eventlogging capsule altogether on T126366: Add IP field only to schemas that need it. Remove it from EL capsule and do not collect it by default {mole}. @leila let's block this task on the completion of QuickSurvey data collection.
In this task, we'll only make configuration changes, and may be fix tests(?) - and drop the field from the capsule. There's a subtask that we'll use to clean up and refactor existing code to remove the IP hasher related stuff from EL.