Remove invalid link 9 from composition workflow

Node 5 (IPAdapterUnifiedLoader) MODEL output should not connect to Node 7.
The chain is: Node 6 IPAdapter output -> Node 7 IPAdapter input[0].

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

comfyui/workflows/image-to-image/ipadapter-composition-i2i-production-v1.json

@@ -221,9 +221,7 @@
         {
           "name": "MODEL",
           "type": "MODEL",
-          "links": [
-            9
-          ],
+          "links": [],
           "slot_index": 0
         },
         {