Fix [ 2064460 ] Workflow user action broken

- problem inherited from a bug in WFActivity

zkwebui/WEB-INF/src/org/adempiere/webui/apps/wf/WWFActivity.java

@@ -676,7 +676,6 @@ public class WWFActivity extends ADForm implements EventListener
 			try
 			{
 				// ensure activity is ran within a transaction
-				m_activity.set_TrxName(Trx.createTrxName("FWFA"));
 				m_activity.setUserConfirmation(AD_User_ID, textMsg);
 			}
 			catch (Exception e)