remove duplicate code

packages/tiptap-extensions/src/nodes/TodoItem.js

@@ -29,39 +29,6 @@ export default class TodoItem extends Node {
           <div class="todo-content" ref="content" :contenteditable="view.editable.toString()"></div>
         </li>
       `,
-      /*
-        The render function enables TodoItem to work in `runtimeonly` builds,
-        which is required for frameworks requiring strict CSP policies. For
-        example, doing this is required in Chrome Extensions. Having both
-        the template and the render function ensures there are no issues
-        converting the node to JSON and rendering the component.
-      */
-      render(h) {
-        return h('li', {
-          attrs: {
-            'data-type': this.node.type.name,
-            'data-done': this.node.attrs.done.toString(),
-            'data-drag-handle': '',
-          },
-        }, [
-          h('span', {
-            class: 'todo-checkbox',
-            attrs: {
-              contenteditable: false,
-            },
-            on: {
-              click: this.onChange,
-            },
-          }),
-          h('div', {
-            class: 'todo-content',
-            attrs: {
-              contenteditable: this.view.editable.toString(),
-            },
-            ref: 'content',
-          }),
-        ])
-      },
     }
   }