Remove or rename the logback.xml file

[Cedesc]

For the java implementation, a logback.xml file is provided (tahu/java/lib/core/src/main/resources) and included in the JAR. This causes issues for users who want to provide their own logging configuration:

• Users cannot easily override the logging configuration without additional effort
• Unexpected logging output may appear

If the file would be renamed and set as default, or removed, it wouldn't be automatically detected and used.