refactor(ivy): remove all old styling code prior to refactor (#31193)

In the previous patch () all the existing styling code was turned
off in favor of using the new refactored ivy styling code. This
patch is a follow up patch to that and removes all old, unused
styling code from the render3 directory.

PR Close #31193

packages/core/src/render3/interfaces/node.ts

@@ -6,14 +6,11 @@
  * found in the LICENSE file at https://angular.io/license
  */
 import {StylingMapArray, TStylingContext} from '../styling_next/interfaces';
-
 import {CssSelector} from './projection';
 import {RNode} from './renderer';
-import {StylingContext} from './styling';
 import {LView, TView} from './view';
 
 
-
 /**
  * TNodeType corresponds to the {@link TNode} `type` property.
  */
@@ -405,7 +402,6 @@ export interface TNode {
    */
   parent: TElementNode|TContainerNode|null;
 
-  stylingTemplate: StylingContext|null;
   /**
    * List of projected TNodes for a given component host element OR index into the said nodes.
    *
@@ -447,19 +443,6 @@ export interface TNode {
    */
   projection: (TNode|RNode[])[]|number|null;
 
-  /**
-   * A buffer of functions that will be called once `elementEnd` (or `element`) completes.
-   *
-   * Due to the nature of how directives work in Angular, some directive code may
-   * need to fire after any template-level code runs. If present, this array will
-   * be flushed (each function will be invoked) once the associated element is
-   * created.
-   *
-   * If an element is created multiple times then this function will be populated
-   * with functions each time the creation block is called.
-   */
-  onElementCreationFns: Function[]|null;
-
   /**
    * A collection of all style bindings and/or static style values for an element.
    *