chore: Remove removeHighContrastHeader global flag

pages/app/app-context.tsx

@@ -11,7 +11,6 @@ interface AppUrlParams {
   direction: 'ltr' | 'rtl';
   visualRefresh: boolean;
   motionDisabled: boolean;
-  removeHighContrastHeader: boolean;
   appLayoutWidget: boolean;
 }
 
@@ -31,7 +30,6 @@ const appContextDefaults: AppContextType = {
     direction: 'ltr',
     visualRefresh: THEME === 'default',
     motionDisabled: false,
-    removeHighContrastHeader: false,
     appLayoutWidget: false,
   },
   setMode: () => {},

pages/app/index.tsx

@@ -18,7 +18,6 @@ import StrictModeWrapper from './components/strict-mode-wrapper';
 import AppContext, { AppContextProvider, parseQuery } from './app-context';
 
 interface GlobalFlags {
-  removeHighContrastHeader?: boolean;
   appLayoutWidget?: boolean;
 }
 const awsuiVisualRefreshFlag = Symbol.for('awsui-visual-refresh-flag');
@@ -84,14 +83,13 @@ function App() {
 }
 
 const history = createHashHistory();
-const { direction, visualRefresh, appLayoutWidget, removeHighContrastHeader } = parseQuery(history.location.search);
+const { direction, visualRefresh, appLayoutWidget } = parseQuery(history.location.search);
 
 // The VR class needs to be set before any React rendering occurs.
 window[awsuiVisualRefreshFlag] = () => visualRefresh;
 if (!window[awsuiGlobalFlagsSymbol]) {
   window[awsuiGlobalFlagsSymbol] = {};
 }
-window[awsuiGlobalFlagsSymbol].removeHighContrastHeader = removeHighContrastHeader;
 window[awsuiGlobalFlagsSymbol].appLayoutWidget = appLayoutWidget;
 
 // Apply the direction value to the HTML element dir attribute

src/internal/utils/content-header-utils.ts

@@ -1,8 +1,3 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { getGlobalFlag } from './global-flags';
-
 export const highContrastHeaderClassName = 'awsui-context-content-header';
-export const shouldRemoveHighContrastHeader = (): boolean => !!getGlobalFlag('removeHighContrastHeader');
-export const getContentHeaderClassName = (): string =>
-  shouldRemoveHighContrastHeader() ? '' : highContrastHeaderClassName;

src/internal/utils/global-flags.ts

@@ -3,7 +3,6 @@
 export const awsuiGlobalFlagsSymbol = Symbol.for('awsui-global-flags');
 
 interface GlobalFlags {
-  removeHighContrastHeader?: boolean;
   appLayoutWidget?: boolean;
 }