revert some unnecessary change

Author: shijiesheng

src/main/java/com/uber/cadence/internal/common/WorkflowExecutionUtils.java

@@ -26,7 +26,24 @@
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import com.google.gson.JsonPrimitive;
-import com.uber.cadence.*;
+import com.uber.cadence.ActivityType;
+import com.uber.cadence.CadenceError;
+import com.uber.cadence.Decision;
+import com.uber.cadence.DecisionType;
+import com.uber.cadence.EntityNotExistsError;
+import com.uber.cadence.EventType;
+import com.uber.cadence.GetWorkflowExecutionHistoryRequest;
+import com.uber.cadence.GetWorkflowExecutionHistoryResponse;
+import com.uber.cadence.History;
+import com.uber.cadence.HistoryEvent;
+import com.uber.cadence.HistoryEventFilterType;
+import com.uber.cadence.TaskList;
+import com.uber.cadence.WorkflowExecution;
+import com.uber.cadence.WorkflowExecutionCloseStatus;
+import com.uber.cadence.WorkflowExecutionFailedEventAttributes;
+import com.uber.cadence.WorkflowExecutionTerminatedEventAttributes;
+import com.uber.cadence.WorkflowExecutionTimedOutEventAttributes;
+import com.uber.cadence.WorkflowType;
 import com.uber.cadence.client.WorkflowTerminatedException;
 import com.uber.cadence.client.WorkflowTimedOutException;
 import com.uber.cadence.common.RetryOptions;