Remove unused method

src/ol/renderer/Map.js

@@ -54,14 +54,6 @@ class MapRenderer extends Disposable {
     this.layerRendererConstructors_.push.apply(this.layerRendererConstructors_, constructors);
   }
 
-  /**
-   * Get the registered layer renderer constructors.
-   * @return {Array<import("./Layer.js").default>} Registered layer renderers.
-   */
-  getLayerRendererConstructors() {
-    return this.layerRendererConstructors_;
-  }
-
   /**
    * @param {import("../PluggableMap.js").FrameState} frameState FrameState.
    * @protected