some cleanup after https://bugs.eclipse.org/bugs/show_bug.cgi?id=406646
diff --git a/testplugins/org.eclipse.objectteams.otdt.debug.tests/test.xml b/testplugins/org.eclipse.objectteams.otdt.debug.tests/test.xml
index 8d44a6d..2b3b9ef 100644
--- a/testplugins/org.eclipse.objectteams.otdt.debug.tests/test.xml
+++ b/testplugins/org.eclipse.objectteams.otdt.debug.tests/test.xml
@@ -9,7 +9,7 @@
 	<property name="eclipse-home" value="${test.eclipseDir}"/>

 	<property name="test.target" value="performance"/>	

 	

-	<property name="library-file" value="${test.eclipseDir}/plugins/${org.eclipse.test}/library.xml"/>

+	<fail unless="library-file">Property "library-file" needs to be passed by the caller.</fail>

 

 	<!-- This target holds all initialization code that needs to be done for -->

 	<!-- all tests that are to be run. Initialization for individual tests -->