Remove duplicated code

Signed-off-by: Andy Jakubowski <hello@andyjakubowski.com>

Author: andyjakubowski

src/components/NotebookPicker.tsx

@@ -54,40 +54,7 @@ export class NotebookPicker extends ReactWidget {
     this.update();
   };
 
-  private handleChange = (event: React.ChangeEvent<HTMLSelectElement>) => {
-    const model = this.panel.model;
-    if (!model) {
-      return;
-    }
-
-    const selected = event.target.value;
-    const deepnoteMetadata = this.panel.context.model.getMetadata('deepnote');
-    const notebooks = deepnoteMetadata?.notebooks;
-
-    if (notebooks && selected in notebooks) {
-      // clone the notebook JSON
-      const newModelData = { ...notebooks[selected] };
-
-      // preserve deepnote metadata *without* re-inserting all notebooks
-      newModelData.metadata = {
-        ...(newModelData.metadata ?? {}),
-        deepnote: {
-          notebook_names: deepnoteMetadata?.notebook_names ?? [],
-          notebooks: deepnoteMetadata?.notebooks ?? {}
-        }
-      };
-
-      model.fromJSON(newModelData);
-      model.dirty = false;
-    }
-
-    this.selected = selected;
-    this.update();
-  };
-
   render(): JSX.Element {
-    const deepnoteMetadata = this.panel.context.model.getMetadata('deepnote');
-    const metadataNames = deepnoteMetadata?.notebook_names;
     const deepnoteMetadata = this.panel.context.model.getMetadata('deepnote');
     const metadataNames = deepnoteMetadata?.notebook_names;
     const names =