entities: Stop counting entities

This was only used in the old version of xmlParserEntityCheck.

include/libxml/parser.h

@@ -297,7 +297,7 @@ struct _xmlParserCtxt {
      */
     xmlError          lastError;
     xmlParserMode     parseMode;    /* the parser mode */
-    unsigned long    nbentities;    /* number of entities references */
+    unsigned long    nbentities;    /* unused */
     unsigned long  sizeentities;    /* size of parsed entities */
 
     /* for use by HTML non-recursive parser */