additional.bundles doesn't work in tycho
diff --git a/core/plugins/org.eclipse.dltk.testing/build.properties b/core/plugins/org.eclipse.dltk.testing/build.properties
index 71ac9fc..d327868 100755
--- a/core/plugins/org.eclipse.dltk.testing/build.properties
+++ b/core/plugins/org.eclipse.dltk.testing/build.properties
@@ -8,7 +8,7 @@
 # Contributors:
 #     IBM Corporation - initial API and implementation
 ###############################################################################
-additional.bundles=org.eclipse.dltk.annotations
+#additional.bundles=org.eclipse.dltk.annotations
 bin.includes = plugin.xml,\
                about.html,\
                icons/,\
diff --git a/core/plugins/org.eclipse.dltk.testing/src/org/eclipse/dltk/internal/testing/TestCategoryEngineManager.java b/core/plugins/org.eclipse.dltk.testing/src/org/eclipse/dltk/internal/testing/TestCategoryEngineManager.java
index 8956b7c..ba465be 100644
--- a/core/plugins/org.eclipse.dltk.testing/src/org/eclipse/dltk/internal/testing/TestCategoryEngineManager.java
+++ b/core/plugins/org.eclipse.dltk.testing/src/org/eclipse/dltk/internal/testing/TestCategoryEngineManager.java
@@ -18,7 +18,6 @@
 
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IConfigurationElement;
-import org.eclipse.dltk.annotations.Nullable;
 import org.eclipse.dltk.internal.testing.launcher.NullTestRunnerUI;
 import org.eclipse.dltk.internal.testing.util.NumberUtils;
 import org.eclipse.dltk.testing.DLTKTestingPlugin;
@@ -103,7 +102,6 @@
 	 * @param runnerUI
 	 * @return
 	 */
-	@Nullable
 	public static ITestCategoryEngine[] getCategoryEngines(
 			ITestRunnerUI runnerUI) {
 		if (runnerUI instanceof NullTestRunnerUI) {