Remove two XXX comments that have been resolved.
diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
index e030160..352fae0 100644
--- a/Lib/test/test_largefile.py
+++ b/Lib/test/test_largefile.py
@@ -3,8 +3,6 @@
 #----------------------------------------------------------------------
 # test largefile support on system where this makes sense
 #
-#XXX how to only run this when support is there
-#XXX how to only optionally run this, it will take along time
 #----------------------------------------------------------------------
 
 import test_support