chore: remove obselete Node version update page (aws-amplify#4576)

* chore: remove obselete Node version update page

* chore: remove lambda-node-version-update from sidebar nav

Author: josefaidt

src/directory/directory.js

@@ -1898,11 +1898,6 @@ const directory = {
             route: '/cli/migration/override',
             filters: []
           },
-          {
-            title: 'Node Version Update',
-            route: '/cli/migration/lambda-node-version-update',
-            filters: []
-          },
           {
             title: 'Lambda layer behavior updates',
             route: '/cli/migration/lambda-layers-update',