In related ticket SERVER-48353, we cleaned up the automatically-generated attribute names for logv2 to be more readable. However, many logging statements still provide both a "format-string" and "message-string". In the master branch, only the "message-string" is ever used for structured JSON logs. The "format-string" was necessary during the transition from text logs to JSON logs, but is now vestigial. The "format-strings" reduce readability of the code, since they are largely redundant with the "message-string". We should delete the "format-string" argument from logging statements in the following directories:

• db/query
• s/query
• db/views
• db/matcher
• db/exec