Step 8.5: Move isLoggedIn helper

src/components/structures/MatrixChat.tsx

@@ -2093,12 +2093,3 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
         </ErrorBoundary>;
     }
 }
-
-export function isLoggedIn(): boolean {
-    // JRS: Maybe we should move the step that writes this to the window out of
-    // `element-web` and into this file? Better yet, we should probably create a
-    // store to hold this state.
-    // See also https://github.com/vector-im/element-web/issues/15034.
-    const app = window.matrixChat;
-    return app && (app as MatrixChat).state.view === Views.LOGGED_IN;
-}