various: remove redundant parentheses (#15793)

cmd/swarm/config.go

@@ -315,7 +315,7 @@ func checkDeprecated(ctx *cli.Context) {
 func printConfig(config *bzzapi.Config) string {
 	out, err := tomlSettings.Marshal(&config)
 	if err != nil {
-		return (fmt.Sprintf("Something is not right with the configuration: %v", err))
+		return fmt.Sprintf("Something is not right with the configuration: %v", err)
 	}
 	return string(out)
 }