Use path in name for test262-es6

test/test262-es6/testcfg.py

Index: test/test262-es6/testcfg.py
diff --git a/test/test262-es6/testcfg.py b/test/test262-es6/testcfg.py
index 0a894104a2f59371244805930755c7606856e248..cb44da073a70c2568074859445ffbd5773124e3d 100644
--- a/test/test262-es6/testcfg.py
+++ b/test/test262-es6/testcfg.py
@@ -57,9 +57,6 @@ class Test262TestSuite(testsuite.TestSuite):
     self.harness += [os.path.join(self.root, "harness-adapt.js")]
     self.ParseTestRecord = None
 
-  def CommonTestName(self, testcase):
-    return testcase.path.split(os.path.sep)[-1]
-
   def ListTests(self, context):
     tests = []
     for dirname, dirs, files in os.walk(self.testroot):