auth-react: remove CompatAppProgress since it's no longer needed

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/auth-react/src/components/CookieAuthRefreshProvider/CompatAppProgress.tsx

@@ -1,40 +0,0 @@
-/*
- * Copyright 2024 The Backstage Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import React from 'react';
-import { useApp } from '@backstage/core-plugin-api';
-import { useVersionedContext } from '@backstage/version-bridge';
-
-import {
-  coreComponentRefs,
-  useComponentRef,
-} from '@backstage/frontend-plugin-api';
-
-function LegacyAppProgress() {
-  const app = useApp();
-  const { Progress } = app.getComponents();
-  return <Progress />;
-}
-
-function NewAppProgress() {
-  const Progress = useComponentRef(coreComponentRefs.progress);
-  return <Progress />;
-}
-
-export function CompatAppProgress() {
-  const isInNewApp = !useVersionedContext<{ 1: unknown }>('app-context');
-  return isInNewApp ? <NewAppProgress /> : <LegacyAppProgress />;
-}

plugins/auth-react/src/components/CookieAuthRefreshProvider/CookieAuthRefreshProvider.tsx

@@ -16,9 +16,9 @@
 
 import React, { ReactNode } from 'react';
 import { ErrorPanel } from '@backstage/core-components';
-import { Button } from '@material-ui/core';
+import { useApp } from '@backstage/core-plugin-api';
+import Button from '@material-ui/core/Button';
 import { useCookieAuthRefresh } from '../../hooks';
-import { CompatAppProgress } from './CompatAppProgress';
 
 /**
  * @public
@@ -41,12 +41,13 @@ export function CookieAuthRefreshProvider(
   props: CookieAuthRefreshProviderProps,
 ): JSX.Element {
   const { children, ...options } = props;
+  const app = useApp();
+  const { Progress } = app.getComponents();
 
   const result = useCookieAuthRefresh(options);
 
   if (result.status === 'loading') {
-    // This component should be compatible with both old and new frontend systems
-    return <CompatAppProgress />;
+    return <Progress />;
   }
 
   if (result.status === 'error') {