Remove containsXY function from ol/geom/SimpleGeometry

The function is already present in the base class (ol/geom/Geometry)

src/ol/geom/SimpleGeometry.js

@@ -1,7 +1,6 @@
 /**
  * @module ol/geom/SimpleGeometry
  */
-import {FALSE} from '../functions.js';
 import {createOrUpdateFromFlatCoordinates, getCenter} from '../extent.js';
 import Geometry from '../geom/Geometry.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
@@ -291,12 +290,6 @@ export function getStrideForLayout(layout) {
 }
 
 
-/**
- * @inheritDoc
- */
-SimpleGeometry.prototype.containsXY = FALSE;
-
-
 /**
  * @param {SimpleGeometry} simpleGeometry Simple geometry.
  * @param {import("../transform.js").Transform} transform Transform.