fix(material/progress-bar): 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_PROGRESS_BAR_LOCATION_FACTORY` has been removed.

Author: crisbeto

goldens/material/progress-bar/index.api.md

@@ -18,9 +18,6 @@ export const MAT_PROGRESS_BAR_DEFAULT_OPTIONS: InjectionToken<MatProgressBarDefa
 // @public
 export const MAT_PROGRESS_BAR_LOCATION: InjectionToken<MatProgressBarLocation>;
 
-// @public @deprecated
-export function MAT_PROGRESS_BAR_LOCATION_FACTORY(): MatProgressBarLocation;
-
 // @public (undocumented)
 export class MatProgressBar implements AfterViewInit, OnDestroy {
     constructor(...args: unknown[]);

src/material/progress-bar/progress-bar.ts

@@ -59,7 +59,19 @@ export const MAT_PROGRESS_BAR_DEFAULT_OPTIONS = new InjectionToken<MatProgressBa
  */
 export const MAT_PROGRESS_BAR_LOCATION = new InjectionToken<MatProgressBarLocation>(
   'mat-progress-bar-location',
-  {providedIn: 'root', factory: MAT_PROGRESS_BAR_LOCATION_FACTORY},
+  {
+    providedIn: 'root',
+    factory: () => {
+      const _document = inject(DOCUMENT);
+      const _location = _document ? _document.location : null;
+
+      return {
+        // Note that this needs to be a function, rather than a property, because Angular
+        // will only resolve it once, but we want the current path on each call.
+        getPathname: () => (_location ? _location.pathname + _location.search : ''),
+      };
+    },
+  },
 );
 
 /**
@@ -70,22 +82,6 @@ export interface MatProgressBarLocation {
   getPathname: () => string;
 }
 
-/**
- * @docs-private
- * @deprecated No longer used, will be removed.
- * @breaking-change 21.0.0
- */
-export function MAT_PROGRESS_BAR_LOCATION_FACTORY(): MatProgressBarLocation {
-  const _document = inject(DOCUMENT);
-  const _location = _document ? _document.location : null;
-
-  return {
-    // Note that this needs to be a function, rather than a property, because Angular
-    // will only resolve it once, but we want the current path on each call.
-    getPathname: () => (_location ? _location.pathname + _location.search : ''),
-  };
-}
-
 export type ProgressBarMode = 'determinate' | 'indeterminate' | 'buffer' | 'query';
 
 @Component({