First, you have to edit your setting file (i.e.
/etc/mysql/my.ini) and change the
log-bin value to:
# /etc/mysql/my.ini # ... [mysqld] skip-log-bin # ...
To force the new settings, you have to restart the mysql service like this, but keep in mind that your server will be unavailable for some time:
service mysql restart
Now you can remove old logs by calling the following SQL command:
PURGE BINARY LOGS TO 'mysqld-bin.000048';