JBIDE-13343 FavoritesClassControllerTest.testGetFavoritesClassesList fails

JavaFavoritesFieldEditor and FavoritesClassController
are not used and are not supported since 2007.
Let's remove them with the test.
JBIDE-13370 Cannot read temporary file

Synchronized blocks that read and write temporary files.
Put stack trace into log with more details about the failing object.