Removing unused imports
diff --git a/airavata-kubernetes/modules/microservices/api-server/src/main/java/org/apache/airavata/k8s/api/server/model/task/TaskDAG.java b/airavata-kubernetes/modules/microservices/api-server/src/main/java/org/apache/airavata/k8s/api/server/model/task/TaskDAG.java
index 88ffef3..e603a4d 100644
--- a/airavata-kubernetes/modules/microservices/api-server/src/main/java/org/apache/airavata/k8s/api/server/model/task/TaskDAG.java
+++ b/airavata-kubernetes/modules/microservices/api-server/src/main/java/org/apache/airavata/k8s/api/server/model/task/TaskDAG.java
@@ -1,7 +1,5 @@
 package org.apache.airavata.k8s.api.server.model.task;
 
-import com.sun.javafx.tk.Toolkit;
-
 import javax.persistence.*;
 
 /**