remove secret from manifest

manifests/hedgedoc/all.yaml

@@ -1,17 +1,4 @@
 apiVersion: v1
-kind: Secret
-metadata:
-  name: hedgedoc
-  namespace: hedgedoc
-  labels:
-    app.kubernetes.io/name: hedgedoc
-    app.kubernetes.io/version: "1.11.0"
-    app.kubernetes.io/part-of: hedgedoc
-type: Opaque
-stringData:
-  DB_PASS: hedgedoc-change-me
----
-apiVersion: v1
 kind: ConfigMap
 metadata:
   name: hedgedoc