Filter "Aborted connection" error log messages

Could we please have an option to disable these warnings:

[Warning] Aborted connection 215716 to db: '<database>' user: '<user>' host: '127.0.0.1' (Got timeout reading communication packets)

I get loads of these because I use Persistent Connections with PHP.

These cause a big noise in the Error Log.

Something like MySQL 5.7 seems to have, "log_error_suppression_list", might help.
MariaDB doesn't seem to have that option.

"log_error_verbosity" might also be a good idea to implement, although that wouldn't fix my problem, as I want to continue to have Warnings logged in the Error Log.