chore(ui): delete unused files

invokeai/frontend/web/src/features/canvas/util/konvaNodeToDataURL.ts

@@ -1,16 +0,0 @@
-import Konva from 'konva';
-import { IRect } from 'konva/lib/types';
-
-/**
- * Converts a Konva node to a dataURL
- * @param node - The Konva node to convert to a dataURL
- * @param boundingBox - The bounding box to crop to
- * @returns A dataURL of the node cropped to the bounding box
- */
-export const konvaNodeToDataURL = (
-  node: Konva.Node,
-  boundingBox: IRect
-): string => {
-  // get a dataURL of the bbox'd region
-  return node.toDataURL(boundingBox);
-};