Throw out unused code

Change-Id: I030e438420a7c6b2945edd21784818b43200c402
Signed-off-by: Carsten Hammer <carsten.hammer@t-online.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.resources/+/175810
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Mickael Istria <mistria@redhat.com>