remove ShapeUtil.point (#1591)

Removes the unused `ShapeUtil.point`.

### Change Type

- [x] `major` — Breaking change

### Release Notes

- [editor] Remove `ShapeUtil.point`

packages/editor/api-report.md

@@ -1894,7 +1894,6 @@ export abstract class ShapeUtil<T extends TLUnknownShape = TLUnknownShape> {
     onTranslateEnd?: TLOnTranslateEndHandler<T>;
     onTranslateStart?: TLOnTranslateStartHandler<T>;
     outline(shape: T): Vec2dModel[];
-    point(shape: T): Vec2dModel;
     // @internal
     providesBackgroundForChildren(shape: T): boolean;
     abstract render(shape: T): any;

packages/editor/src/lib/editor/shapes/ShapeUtil.ts

@@ -8,7 +8,6 @@ import type { Editor } from '../Editor'
 import { TLResizeHandle } from '../types/selection-types'
 import { TLExportColors } from './shared/TLExportColors'
 
-const points = new WeakMapCache<TLShape, Vec2dModel>()
 const transforms = new WeakMapCache<TLShape, Matrix2d>()
 
 /** @public */
@@ -234,16 +233,6 @@ export abstract class ShapeUtil<T extends TLUnknownShape = TLUnknownShape> {
 		)
 	}
 
-	/**
-	 * Get the cached point. Do not override this method!
-	 *
-	 * @param shape - The shape.
-	 * @public
-	 */
-	point(shape: T): Vec2dModel {
-		return points.get<T>(shape, (shape) => ({ x: shape.x, y: shape.y }))
-	}
-
 	/**
 	 * Get the shape's (not cached) outline. Do not override this method!
 	 *