Check usage of support functions in edget

[johannah-pik]

There are support functions in edgeTransport for repetitive tasks throughout the model e.g. getFilterEntriesUnivocalName() that lists associated univocalNames for any entry of the decision tree or toolCheckAllLevelsComplete() that checks whether the data for all levels of the decision tree is complete and there is no additional data.
Some of them are not used anymore or only used once.

Check:

• if and how they are used
• If they are beneficial or should be removed
• If they are kept: Can they be approved and/or used more throughout the model?