MySQL Config - Remove H2Listener Problem

I want to configure my Bonita BPM Studio Windows Version to use MySQL as database instead of h2. I followed the documentation (http://documentation.bonitasoft.com/database-configuration-2) and also removed all h2 configs and files. Of course I also removed the H2Listener entry from the server.xml. But in the Bonita Studio log file I always get the following error: