Content of JBDS update site shows Usage and Common Mylyn feature as available for installation from core category

After installation Eclipse Install dialog looks like:

These two features should not be visible after installation:
1. Usage Feature - should be included into JBDS product feature
2. Common Mylyn - should be uncategorised, because it doesn't provide any visible functionality for user and it is installed when Mylyn Issue Tracker Connector installed out of central.