it throws an exception if deletion fails

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@22331 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/test/java/hudson/FilePathTest.java

@@ -98,8 +98,8 @@ public class FilePathTest extends TestCase {
 
             f.copyTo(f2);
 
-            assertTrue("could not delete target " + tmp.getPath(), f.delete());
-            assertTrue("could not delete target " + tmp2.getPath(), f2.delete());
+            f.delete();
+            f2.delete();
         }
     }