Remove filename variable from ceval.c

Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
It encoded the Unicode filename to UTF-8, but the encoding fails on
undecodable filename (on surrogate characters) which raises an unexpected
UnicodeEncodeError on recursion limit.
diff --git a/Misc/NEWS b/Misc/NEWS
index 64d4bbc..7b55d20 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,12 +10,17 @@
 Core and Builtins
 -----------------
 
-- Check for NULL result in PyType_FromSpec.
+- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
+  It encoded the Unicode filename to UTF-8, but the encoding fails on
+  undecodable filename (on surrogate characters) which raises an unexpected
+  UnicodeEncodeError on recursion limit.
 
 - Issue #11187: Remove bootstrap code (use ASCII) of
   PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
   locale encoding) in PyUnicode_EncodeFSDefault().
 
+- Check for NULL result in PyType_FromSpec.
+
 Library
 -------