examples/operator: Remove duplicate operator service account definition

Signed-off-by: f.medini <[email protected]>

Author: mdnfiras

examples/operator/operator.yaml

@@ -7592,11 +7592,6 @@ metadata:
   name: vitess-operator
   namespace: example
 ---
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: vitess-operator
----
 apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
 metadata:
@@ -7731,7 +7726,7 @@ roleRef:
 subjects:
   - kind: ServiceAccount
     name: vitess-operator
-    namespace: default
+    namespace: example
 ---
 apiVersion: scheduling.k8s.io/v1
 description: Vitess components (vttablet, vtgate, vtctld, etcd)