mixvbp: mute warning of syntax parsing failure

BZ: 164803

WTRACE to VTRACE. This warning is harmless but annoying.

Change-Id: I9300de92daa35e8f5c7d0659801580472ad8b7a2
Signed-off-by: pingshix <pingx.shi@intel.com>
diff --git a/mixvbp/vbp_manager/vbp_utils.c b/mixvbp/vbp_manager/vbp_utils.c
index edd94c1..1647269 100755
--- a/mixvbp/vbp_manager/vbp_utils.c
+++ b/mixvbp/vbp_manager/vbp_utils.c
@@ -389,7 +389,7 @@
         /* can't return error for now. Neet further investigation */
         if (0 != error)
         {
-            WTRACE("failed to parse the syntax: %d!", error);
+            VTRACE("failed to parse the syntax: %d!", error);
         }
 
         /* process parsing result */