remove unused tree extension element

src/Umbraco.Web.UI.Client/src/backoffice/shared/components/tree/tree-extension.element.ts

@@ -1,58 +0,0 @@
-import { CSSResultGroup, html, LitElement } from 'lit';
-import { UUITextStyles } from '@umbraco-ui/uui-css/lib';
-import { customElement, property, state } from 'lit/decorators.js';
-import { createExtensionElement } from '@umbraco-cms/extensions-api';
-import type { ManifestTree } from '@umbraco-cms/models';
-
-import './navigator/tree-navigator.element';
-import './context-menu/tree-context-menu-page-action-list.element';
-import './context-menu/tree-context-menu-page.service';
-import './context-menu/tree-context-menu.service';
-import './action/tree-item-action-extension.element';
-
-@customElement('umb-tree-extension')
-export class UmbTreeExtension extends LitElement {
-	static styles: CSSResultGroup = [UUITextStyles];
-
-	private _tree?: ManifestTree;
-
-	@property({ type: Object })
-	public get tree(): ManifestTree | undefined {
-		return this._tree;
-	}
-	public set tree(value: ManifestTree | undefined) {
-		this._tree = value;
-		this._createElement();
-	}
-
-	@state()
-	private _element?: any;
-
-	private async _createElement() {
-		if (!this.tree) return;
-
-		// If the manifest doesn't specify a custom element, we will render a default tree element
-		if (!this.tree.elementName && !this.tree.js && !this.tree.loader) {
-			this._element = document.createElement('umb-tree-navigator');
-			return;
-		}
-
-		try {
-			this._element = (await createExtensionElement(this.tree)) as any | undefined;
-			if (!this._element) return;
-			this._element.tree = this._tree;
-		} catch (error) {
-			// TODO: loading JS failed so we should do some nice UI. (This does only happen if extension has a js prop, otherwise we concluded that no source was needed resolved the load.)
-		}
-	}
-
-	render() {
-		return html`${this._element}`;
-	}
-}
-
-declare global {
-	interface HTMLElementTagNameMap {
-		'umb-tree-extension': UmbTreeExtension;
-	}
-}