Clean up initializer-related comments, test data

hack/testdata/initializer-clusterrolebinding.yaml

@@ -1,17 +0,0 @@
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRoleBinding
-metadata:
-  name: super-admin
-  initializers:
-    pending:
-    - name: podimage.initializer.com
-  labels:
-    clusterrolebinding: super
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: admin
-subjects:
-- apiGroup: rbac.authorization.k8s.io
-  kind: User
-  name: super-admin

hack/testdata/initializer-deployments.yaml

@@ -1,25 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: web
-  initializers:
-    pending:
-    - name: podimage.initializer.com
-  labels:
-    run: web
-spec:
-  replicas: 5
-  selector:
-    matchLabels:
-      run: web
-  template:
-    metadata:
-      labels:
-        run: web
-    spec:
-      containers:
-      - image: nginx:1.10
-        name: web
-        ports:
-        - containerPort: 80
-          protocol: TCP

hack/testdata/initializer-redis-master-service.yaml

@@ -1,19 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: redis-master
-  labels:
-    app: redis
-    role: master
-    tier: backend
-  initializers:
-    pending:
-    - name: podimage.initializer.com
-spec:
-  ports:
-  - port: 6379
-    targetPort: 6379
-  selector:
-    app: redis
-    role: master
-    tier: backend