Please don't do that. I strongly advise against disabling logging. Logging is the number one tool to troubleshoot issues you have. To reduce logging it is preferable to set it to a higher level, like WARN or ERROR. I can't think an scenario that requires it. If you absolutely need to turn it off, and understand clearly the tradeoffs, you need to set each package (or category) to a higher level, like WARN, ERROR or OFF. The top level packages for Mule and MuleSoft are a good start.
Example:
<!-- DON'T DO THIS! -->
<AsyncLogger name="org.mule" level="ERROR"/>
<AsyncLogger name="com.mulesoft" level="ERROR"/>
You might still find log entries from some packages from third party libraries. You can iteratively add the levels for those too until nothing else is logged.
Note that if you have any issues you will be on your own with no clues as what happened.