clean up too old comments for v1.9 or before in examples

content/en/examples/application/deployment-patch.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: patch-demo

content/en/examples/application/deployment-retainkeys.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: retainkeys-demo

content/en/examples/application/deployment-scale.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-deployment

content/en/examples/application/deployment-update.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-deployment

content/en/examples/application/deployment.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: nginx-deployment

content/en/examples/application/guestbook/frontend-deployment.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: frontend

content/en/examples/application/guestbook/redis-master-deployment.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: redis-master

content/en/examples/application/guestbook/redis-slave-deployment.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: redis-slave

content/en/examples/application/mysql/mysql-deployment.yaml

@@ -9,7 +9,7 @@ spec:
     app: mysql
   clusterIP: None
 ---
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: mysql

content/en/examples/application/wordpress/mysql-deployment.yaml

@@ -25,7 +25,7 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: wordpress-mysql

content/en/examples/application/wordpress/wordpress-deployment.yaml

@@ -25,7 +25,7 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: wordpress