fix(material/sort): remove deprecated factory functions

Removes factory functions that we had marked as deprecated for v21. These functions aren't necessary since we switched to standalone.

BREAKING CHANGE:
* `MAT_SORT_HEADER_INTL_PROVIDER` has been removed.
* `MAT_SORT_HEADER_INTL_PROVIDER_FACTORY` has been removed.

Author: crisbeto

goldens/material/sort/index.api.md

@@ -13,7 +13,6 @@ import { Observable } from 'rxjs';
 import { OnChanges } from '@angular/core';
 import { OnDestroy } from '@angular/core';
 import { OnInit } from '@angular/core';
-import { Optional } from '@angular/core';
 import { Subject } from 'rxjs';
 
 // @public @deprecated
@@ -30,16 +29,6 @@ export interface ArrowViewStateTransition {
 // @public
 export const MAT_SORT_DEFAULT_OPTIONS: InjectionToken<MatSortDefaultOptions>;
 
-// @public @deprecated
-export const MAT_SORT_HEADER_INTL_PROVIDER: {
-    provide: typeof MatSortHeaderIntl;
-    deps: Optional[][];
-    useFactory: typeof MAT_SORT_HEADER_INTL_PROVIDER_FACTORY;
-};
-
-// @public @deprecated
-export function MAT_SORT_HEADER_INTL_PROVIDER_FACTORY(parentIntl: MatSortHeaderIntl): MatSortHeaderIntl;
-
 // @public
 export class MatSort implements OnChanges, OnDestroy, OnInit {
     constructor(_defaultOptions?: MatSortDefaultOptions | undefined);

src/material/sort/sort-header-intl.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {Injectable, SkipSelf, Optional} from '@angular/core';
+import {Injectable} from '@angular/core';
 import {Subject} from 'rxjs';
 
 /**
@@ -21,24 +21,3 @@ export class MatSortHeaderIntl {
    */
   readonly changes: Subject<void> = new Subject<void>();
 }
-
-/**
- * @docs-private
- * @deprecated No longer used, will be removed.
- * @breaking-change 21.0.0
- */
-export function MAT_SORT_HEADER_INTL_PROVIDER_FACTORY(parentIntl: MatSortHeaderIntl) {
-  return parentIntl || new MatSortHeaderIntl();
-}
-
-/**
- * @docs-private
- * @deprecated No longer used, will be removed.
- * @breaking-change 21.0.0
- */
-export const MAT_SORT_HEADER_INTL_PROVIDER = {
-  // If there is already an MatSortHeaderIntl available, use that. Otherwise, provide a new one.
-  provide: MatSortHeaderIntl,
-  deps: [[new Optional(), new SkipSelf(), MatSortHeaderIntl]],
-  useFactory: MAT_SORT_HEADER_INTL_PROVIDER_FACTORY,
-};

src/material/sort/sort-module.ts

@@ -9,12 +9,10 @@
 import {NgModule} from '@angular/core';
 import {MatSortHeader} from './sort-header';
 import {MatSort} from './sort';
-import {MAT_SORT_HEADER_INTL_PROVIDER} from './sort-header-intl';
 import {MatCommonModule} from '../core';
 
 @NgModule({
   imports: [MatCommonModule, MatSort, MatSortHeader],
   exports: [MatSort, MatSortHeader],
-  providers: [MAT_SORT_HEADER_INTL_PROVIDER],
 })
 export class MatSortModule {}