delete the txOpTime in transactionContent.java, now use it in the ContractEventSendOpTemplate, only for contract related;

source/test/test-integration/src/test/java/test/com/jd/blockchain/intgr/IntegrationTest4Bftsmart.java

@@ -139,7 +139,7 @@ public class IntegrationTest4Bftsmart {
         }
 
         try {
-            Thread.sleep(60000000);
+            Thread.sleep(60000);
         } catch (InterruptedException e) {
             e.printStackTrace();
         }