[Observium] Mysql binary log files full hd

We've got a server running subscription observium and inadvertently had our mysql binary logging settings not optimized and filled the drive.

Mysql won't start to run the recovery process due to the full drive.

Server is only running observium. Is it safe to manually delete some of the old binlog files to get mysql to start and then run the cleanup in mysql or would I lose observium info?

Thanks!

Jay