diff --git a/src/main/java/org/bdware/sc/ContractManager.java b/src/main/java/org/bdware/sc/ContractManager.java
index 125fd96..0962590 100644
--- a/src/main/java/org/bdware/sc/ContractManager.java
+++ b/src/main/java/org/bdware/sc/ContractManager.java
@@ -24,7 +24,6 @@ import org.bdware.sc.units.MultiContractMeta;
 import org.bdware.sc.units.RespCache;
 import org.bdware.sc.util.JsonUtil;
 import org.bdware.sc.util.VersionUtil;
-import org.bdware.server.trustedmodel.ContractExecutor;
 import org.bdware.server.trustedmodel.SingleNodeExecutor;
 import org.hyperic.sigar.Mem;
 import org.hyperic.sigar.ProcMem;
@@ -1897,9 +1896,8 @@ public class ContractManager {
         return ret;
     }
 
-    public String deliverEvent(REvent msg) {
+    public void deliverEvent(REvent msg) {
         eventBroker.handle(msg);
-        return "success";
     }
 
     // ======log api
@@ -2223,10 +2221,6 @@ public class ContractManager {
         eventBroker.doSubscribe(topic, new WSClientConsumer(channel));
     }
 
-    public ContractExecutor getExecutor(String contractID) {
-        return statusRecorder.getContractMeta(contractID).contractExecutor;
-    }
-
     public JsonElement getLedgerParams() {
         return chainOpener.getLedgerParams();
     }