removed node cleanup

lib/network/modules/Clustering.js

@@ -600,7 +600,6 @@ class ClusterEngine {
     }
 
     // remove clusterNode
-    this.body.nodes[clusterNodeId].cleanup();
     delete this.body.nodes[clusterNodeId];
 
     if (refreshData === true) {

lib/network/modules/NodesHandler.js

@@ -275,7 +275,6 @@ class NodesHandler {
 
     for (let i = 0; i < ids.length; i++) {
       let id = ids[i];
-      nodes[id].cleanup();
       delete nodes[id];
     }
 

lib/network/modules/components/Node.js

@@ -227,10 +227,6 @@ class Node {
       this.shape.setOptions(this.options);
     }
     else {
-      // clean up the shape if it is already made so the new shape can start clean.
-      if (this.shape) {
-        this.shape.cleanup();
-      }
       // choose draw method depending on the shape
       switch (this.options.shape) {
         case 'box':
@@ -438,14 +434,6 @@ class Node {
     this.shape.boundingBox.bottom > obj.top
     );
   }
-
-  /**
-   * clean all required things on delete.
-   * @returns {*}
-   */
-  cleanup() {
-    return this.shape.cleanup();
-  }
 }
 
 export default Node;

lib/network/modules/components/nodes/util/NodeBase.js

@@ -67,9 +67,6 @@ class NodeBase {
       }
     }
   }
-
-  // possible cleanup for use in shapes
-  cleanup() {}
 }
 
 export default NodeBase;