[Glitch] Use the new JSX transform everywhere

Port 8f66126b10 to glitch-soc

app/javascript/packs/admin.jsx

@@ -1,6 +1,5 @@
 import './public-path';
 import ready from '../mastodon/ready';
-import React from 'react';
 import { createRoot } from 'react-dom/client';
 
 ready(() => {

app/javascript/packs/public.jsx

@@ -14,7 +14,6 @@ import { timeAgoString }  from '../mastodon/components/relative_timestamp';
 import { delegate }  from '@rails/ujs';
 import emojify  from '../mastodon/features/emoji/emoji';
 import { getLocale }  from '../mastodon/locales';
-import React  from 'react';
 import { createRoot }  from 'react-dom/client';
 import { createBrowserHistory }  from 'history';
 

app/javascript/packs/share.jsx

@@ -3,7 +3,6 @@ import { loadPolyfills } from '../mastodon/polyfills';
 import { start } from '../mastodon/common';
 import ready from '../mastodon/ready';
 import ComposeContainer  from '../mastodon/containers/compose_container';
-import React from 'react';
 import { createRoot } from 'react-dom/client';
 
 start();