EGroupware univention-app list wrong/old entry

I am running UCS: 5.2-3 errata248 and would like to use a clean install of egroupware. Unfortunatly there is an entry of an no longer existing installation showing “univention-app list” which I would like to get rid off.
The local system is “ucs-01” and “wrong” system is “ucs-02”. How can I remove this wrong entry?