ci(cypress): Remove duplicate React versions in end-to-end tests

cypress/support/script-tag/index.html

@@ -17,9 +17,6 @@
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
     integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous" />
 
-  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"
-    integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous" />
-
   <title>OHIF Standalone Viewer</title>
 </head>
 
@@ -28,22 +25,7 @@
 
   <div id="root"></div>
 
-  <!-- Load React. -->
-  <script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
-  <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
   <script>
-    // Workaround to deal with react-router-dom complaining
-    // if process.env is not defined. Must be run before
-    // ohif-viewer package is included.
-    "use strict";
-
-    var process = {
-      env: {
-        NODE_ENV: "production"
-      }
-    };
-
-    window.process = process;
     window.config = {
       // default: '/'
       routerBasename: '/',
@@ -67,10 +49,7 @@
 
   <script src="/dist/index.umd.js" crossorigin></script>
   <script>
-    var Viewer = window.OHIFStandaloneViewer.App;
-    var app = React.createElement(Viewer, window.config, null);
-
-    ReactDOM.render(app, document.getElementById("root"));
+    window.OHIFStandaloneViewer.installViewer(window.config);
   </script>
 </body>