Delete SR Viewport example mode

platform/viewer/src/App.jsx

@@ -21,7 +21,6 @@ import appInit from './appInit.js';
 
 // TODO: Temporarily for testing
 import '@ohif/mode-example';
-import '@ohif/sr-mode-example';
 import '@ohif/mode-longitudinal';
 
 /**

platform/viewer/src/appInit.js

@@ -71,7 +71,6 @@ function appInit(appConfigOrFunc, defaultExtensions) {
   if (!appConfig.modes.length) {
     appConfig.modes.push(window.exampleMode);
     appConfig.modes.push(window.longitudinalMode);
-    appConfig.modes.push(window.SRViewportExample);
   }
 
   return {