Remove extra selector from network-operator Deployment

Remove `control-plane: {{ .Release.Name }}-controller` selector from the
network-operator object in the helm chart
to fix helm upgrade behaviour.

Signed-off-by: Yury Kulazhenkov <[email protected]>

Author: ykulazhenkov

deployment/network-operator/templates/operator.yaml

@@ -25,7 +25,6 @@ spec:
   replicas: 1
   selector:
     matchLabels:
-      control-plane: {{ .Release.Name }}-controller
       {{- include "network-operator.selectorLabels" . | nindent 6 }}
   template:
     metadata: