docs: update Kubernetes deployments

docs/how-tos/migrate.md

@@ -78,54 +78,3 @@ TARGET_DB_PASSWORD=password
  jkaninda/mysql-bkup migrate
 ```
 
-## Kubernetes
-
-```yaml
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: migrate-db
-spec:
-  ttlSecondsAfterFinished: 100
-  template:
-    spec:
-      containers:
-      - name: mysql-bkup
-        # In production, it is advised to lock your image tag to a proper
-        # release version instead of using `latest`.
-        # Check https://github.com/jkaninda/mysql-bkup/releases
-        # for a list of available releases.
-        image: jkaninda/mysql-bkup
-        command:
-        - /bin/sh
-        - -c
-        - migrate
-        resources:
-          limits:
-            memory: "128Mi"
-            cpu: "500m"
-        env:
-        ## Source Database
-          - name: DB_HOST
-            value: "mysql"    
-          - name: DB_PORT
-            value: "3306"  
-          - name: DB_NAME
-            value: "dbname"
-          - name: DB_USERNAME
-            value: "username"
-          - name: DB_PASSWORD
-            value: "password"
-          ## Target Database
-          - name: TARGET_DB_HOST
-            value: "target-mysql"    
-          - name: TARGET_DB_PORT
-            value: "3306"
-          - name: TARGET_DB_NAME
-            value: "dbname"
-          - name: TARGET_DB_USERNAME
-            value: "username"
-          - name: TARGET_DB_PASSWORD
-            value: "password"
-      restartPolicy: Never
-```