cmd/utils: add --nousb to the list of deprecated flags (#23388)

Adds --nousb as a deprecated flag when someone runs the geth show-deprecated-flags command.

cmd/utils/flags.go

@@ -125,10 +125,6 @@ var (
 		Name:  "keystore",
 		Usage: "Directory for the keystore (default = inside the datadir)",
 	}
-	NoUSBFlag = cli.BoolFlag{
-		Name:  "nousb",
-		Usage: "Disables monitoring for and managing USB hardware wallets (deprecated)",
-	}
 	USBFlag = cli.BoolFlag{
 		Name:  "usb",
 		Usage: "Enable monitoring and management of USB hardware wallets",

cmd/utils/flags_legacy.go

@@ -36,10 +36,15 @@ var ShowDeprecated = cli.Command{
 
 var DeprecatedFlags = []cli.Flag{
 	LegacyMinerGasTargetFlag,
+	NoUSBFlag,
 }
 
 var (
 	// (Deprecated May 2020, shown in aliased flags section)
+	NoUSBFlag = cli.BoolFlag{
+		Name:  "nousb",
+		Usage: "Disables monitoring for and managing USB hardware wallets (deprecated)",
+	}
 	LegacyRPCEnabledFlag = cli.BoolFlag{
 		Name:  "rpc",
 		Usage: "Enable the HTTP-RPC server (deprecated and will be removed June 2021, use --http)",