[libxml2] Fix expected error output in Python tests

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 83212ff4be122c424312f7a1986ee7c30f3be98c
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Jun 1 12:42:03 2017 +0200

    Fix expected error output in Python tests

 python/tests/xpathleak.py |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)
---
diff --git a/python/tests/xpathleak.py b/python/tests/xpathleak.py
index 33ab61c..6940b79 100755
--- a/python/tests/xpathleak.py
+++ b/python/tests/xpathleak.py
@@ -4,25 +4,15 @@ import sys, libxml2
 libxml2.debugMemory(True)
 
 expect="""--> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 --> Invalid expression
---> xmlXPathEval: evaluation failed
 """
 err=""
 def callback(ctx, str):