Disable LOOP_FILTER_BITMASK

BUG=aomedia:1922

Change-Id: I368c761d0db211c86e8c4c11d1cc0a90dd0db622
diff --git a/av1/common/enums.h b/av1/common/enums.h
index 445d30c..47259c2 100644
--- a/av1/common/enums.h
+++ b/av1/common/enums.h
@@ -94,7 +94,7 @@
 // TODO(chengchen): Temporal flag serve as experimental flag for WIP
 // bitmask construction.
 // Shall be removed when bitmask code is completely checkedin
-#define LOOP_FILTER_BITMASK 1
+#define LOOP_FILTER_BITMASK 0
 
 #define PROFILE_BITS 3
 // The following three profiles are currently defined.