message: cli: remove duplicate global styles from app template
diff: -import { makeStyles } from '@material-ui/core';
  import { createApp } from '@backstage/core';
  import React, { FC } from 'react';
  import * as plugins from './plugins';
  -const useStyles = makeStyles(theme => ({
  - '@global': {
  - html: {
  - height: '100%',
  - fontFamily: theme.typography.fontFamily,
  - },
  - body: {
  - height: '100%',
  - fontFamily: theme.typography.fontFamily,
  - 'overscroll-behavior-y': 'none',
  - },
  - a: {
  - color: 'inherit',
  - textDecoration: 'none',
  - },
  - },
  -}));
  -
  const app = createApp({
  plugins: Object.values(plugins),
  });
  @@ -29,15 +10,12 @@ const AppProvider = app.getProvider();
  const AppRouter = app.getRouter();
  const AppRoutes = app.getRoutes();
  -const App: FC<{}> = () => {
  - useStyles();
  - return (
  +const App: FC<{}> = () => (
  <AppProvider>
  <AppRouter>
  <AppRoutes />
  </AppRouter>
  </AppProvider>
  );
  -};
  export default App;
  