http/h2demo: remove node selector

For golang/go#48408.

Change-Id: I11f4c4ed317b06297e22c98b98ab529e15f7bd2f
Reviewed-on: https://go-review.googlesource.com/c/net/+/350140
Trust: Heschi Kreinick <[email protected]>
Run-TryBot: Heschi Kreinick <[email protected]>
TryBot-Result: Go Bot <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: heschi

http2/h2demo/deployment-prod.yaml

@@ -17,8 +17,6 @@ spec:
         container.apparmor.security.beta.kubernetes.io/h2demo: runtime/default
     spec:
       serviceAccountName: h2demo
-      nodeSelector:
-        cloud.google.com/gke-nodepool: workload-identity-pool
       containers:
       - name: h2demo
         image: gcr.io/symbolic-datum-552/h2demo:latest