[libxml2] Remove debug printf in xmlreader.c

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 8161b463f52c365273d110cffa2d980a271f98a8
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Feb 28 12:25:05 2019 +0100

    Remove debug printf in xmlreader.c
    
    Fixes #46.

 xmlreader.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/xmlreader.c b/xmlreader.c
index b8e98287..ebf3ca15 100644
--- a/xmlreader.c
+++ b/xmlreader.c
@@ -986,7 +986,6 @@ xmlTextReaderValidatePush(xmlTextReaderPtr reader ATTRIBUTE_UNUSED) {
             */
            node = xmlTextReaderExpand(reader);
            if (node == NULL) {
-printf("Expand failed !\n");
                ret = -1;
            } else {
                ret = xmlRelaxNGValidateFullElement(reader->rngValidCtxt,