Remove Host from Network

[TrayserCassa]

We currently still support one host in the network configuration but this is deprecated since 0.0.45. So this must be removed before we are creating 1.0.0.

[TrayserCassa]

This makes sure it's unique, just FYI

	// +listType=set
	// +kubebuilder:validation:MinItems=1
	Hosts []string `json:"hosts,omitempty"`