Firefox: How do I stop the "Firefox automatically sends some data to Mozilla so that we can improve your experience" message?

Netwrix Endpoint Policy Manager (formerly PolicyPak) Application Manager can remove the message "Firefox automatically sends some data to Mozilla so that we can improve your experience" as seen below.

To do this, use the Endpoint Policy Manager Application Manager pak About:Config A-I Pak.
Use the setting datareporting.policy.dataSubmissionPolicyBypassNotification and set to TRUE.