Delete outdated graphql-helix defer/stream example server

Author: kitten

examples/with-defer-stream-directives/package.json

@@ -4,10 +4,9 @@
   "private": true,
   "scripts": {
     "server:apollo": "node server/apollo-server.js",
-    "server:helix": "node server/graphql-helix.js",
     "server:yoga": "node server/graphql-yoga.js",
     "client": "vite",
-    "start": "run-p client server:apollo"
+    "start": "run-p client server:yoga"
   },
   "dependencies": {
     "@apollo/server": "^4.4.1",
@@ -21,12 +20,9 @@
     "urql": "^3.0.3"
   },
   "devDependencies": {
-    "@polka/parse": "^1.0.0-next.0",
     "@vitejs/plugin-react-refresh": "^1.3.6",
-    "cors": "^2.8.5",
     "graphql-helix": "^1.13.0",
     "npm-run-all": "^4.1.5",
-    "polka": "^0.5.2",
     "vite": "^2.9.15"
   }
 }

examples/with-defer-stream-directives/server/graphql-helix.js

@@ -1,6 +1,3 @@
-// NOTE: This currently fails because responses for @defer/@stream are formatted
-// as `{incremental: [...PAYLOADS], hasNext: true }` rather than `{ ...PAYLOAD, hasNext: true }`
-
 const { createYoga } = require('graphql-yoga');
 const { useDeferStream } = require('@graphql-yoga/plugin-defer-stream');
 const { createServer } = require('http');