[JUNIT] removed duplicated test case

The PicoAnnotationPatchTest is already executed in the Saros Core
regression.

Change-Id: I9e079bc896d61aef9f0759f501d9bc22d84333de
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1372
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>