docs: update Kubernetes deployments

docs/how-tos/migrate.md

@@ -78,54 +78,3 @@ TARGET_DB_PASSWORD=password
  jkaninda/pg-bkup migrate
 ```
 
-## Kubernetes
-
-```yaml
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: migrate-db
-spec:
-  ttlSecondsAfterFinished: 100
-  template:
-    spec:
-      containers:
-        - name: pg-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/pg-bkup/releases
-          # for a list of available releases.
-          image: jkaninda/pg-bkup
-          command:
-            - /bin/sh
-            - -c
-            - migrate
-          resources:
-            limits:
-              memory: "128Mi"
-              cpu: "500m"
-          env:
-            ## Source Database
-            - name: DB_HOST
-              value: "postgres"
-            - name: DB_PORT
-              value: "5432"
-            - name: DB_NAME
-              value: "dbname"
-            - name: DB_USERNAME
-              value: "username"
-            - name: DB_PASSWORD
-              value: "password"
-            ## Target Database
-            - name: TARGET_DB_HOST
-              value: "target-postgres"
-            - name: TARGET_DB_PORT
-              value: "5432"
-            - name: TARGET_DB_NAME
-              value: "dbname"
-            - name: TARGET_DB_USERNAME
-              value: "username"
-            - name: TARGET_DB_PASSWORD
-              value: "password"
-      restartPolicy: Never
-```