Clean up the temporary file when done with it.
diff --git a/Lib/test/test_file.py b/Lib/test/test_file.py
index 4ad5c95..d73167a 100644
--- a/Lib/test/test_file.py
+++ b/Lib/test/test_file.py
@@ -1,3 +1,5 @@
+import os
+
 from test_support import TESTFN
 from UserList import UserList
 
@@ -43,3 +45,5 @@
 else:
     print "writelines accepted sequence of non-string objects"
 f.close()
+
+os.unlink(TESTFN)