deegree logs misleading warnings during startup

[dstenger]

Following warnings are logged during startup of deegree although these JDBC drivers are not located in modules directory:

WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] The JDBC driver org.postgresql.Driver has been found in the modules directory.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] This method of loading JDBC drivers is not supported in deegree any more.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] Please check the webservices handbook for more infomation.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] The jdbc driver has been found at jar:file:/usr/local/tomcat/webapps/deegree-webservices/WEB-INF/lib/postgresql-42.4.1.jar
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] The JDBC driver org.h2.Driver has been found in the modules directory.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] This method of loading JDBC drivers is not supported in deegree any more.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] Please check the webservices handbook for more infomation.
WARN o.d.d.ConnectionProviderManager [localhost-startStop-1] The jdbc driver has been found at jar:file:/usr/local/tomcat/webapps/deegree-webservices/WEB-INF/lib/h2-2.1.210.jar

This might be misleading for users.