A64: Remove A64 specific lines from testcfg.py.

test/message/testcfg.py

Index: test/message/testcfg.py
diff --git a/test/message/testcfg.py b/test/message/testcfg.py
index 89cdcf7559e0d887c9462d374d4a171635e9709c..b472f9cfb30b68ab5baf73545d1837b7d9746807 100644
--- a/test/message/testcfg.py
+++ b/test/message/testcfg.py
@@ -73,13 +73,10 @@ class MessageTestSuite(testsuite.TestSuite):
       return f.read()
 
   def _IgnoreLine(self, string):
-    """Ignore empty lines, valgrind output, Android output, A64 output."""
+    """Ignore empty lines, valgrind output, Android output."""
     if not string: return True
     return (string.startswith("==") or string.startswith("**") or
             string.startswith("ANDROID") or
-            # TODO(ulan): remove this message once all A64 features are
-            # implemented.
-            string.startswith("UNIMPLEMENTED") or
             # These five patterns appear in normal Native Client output.
             string.startswith("DEBUG MODE ENABLED") or
             string.startswith("tools/nacl-run.py") or