remove unused variables.
diff --git a/src/main/java/net/onrc/onos/util/GraphDBConnection.java b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
index afb8f9b..e25a0c6 100644
--- a/src/main/java/net/onrc/onos/util/GraphDBConnection.java
+++ b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
@@ -34,7 +34,6 @@
 	private static GraphDBConnection singleton = new GraphDBConnection();
 	private static TitanGraph graph;
 	private static EventTransactionalGraph<TitanGraph> eg;
-	private static GraphDBOperation utils;
 	private static String configFile;
 
 	/*