[#750] adm: Drop deprecated GetContract*()

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

cmd/frostfs-adm/internal/modules/morph/deploy.go

@@ -76,7 +76,8 @@ func deployContractCmd(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	nnsCs, err := c.Client.GetContractStateByID(1)
+	r := management.NewReader(c.ReadOnlyInvoker)
+	nnsCs, err := r.GetContractByID(1)
 	if err != nil {
 		return fmt.Errorf("can't fetch NNS contract state: %w", err)
 	}