cli: output contract after compiling only with --verbose flag

Also remove Debug from compiler option as it is used only in CLI.

cli/smartcontract/smart_contract.go

@@ -351,7 +351,6 @@ func contractCompile(ctx *cli.Context) error {
 
 	o := &compiler.Options{
 		Outfile: ctx.String("out"),
-		Debug:   ctx.Bool("verbose"),
 
 		DebugInfo: ctx.String("emitdebug"),
 	}
@@ -360,7 +359,9 @@ func contractCompile(ctx *cli.Context) error {
 	if err != nil {
 		return cli.NewExitError(err, 1)
 	}
+	if ctx.Bool("verbose") {
 		fmt.Println(hex.EncodeToString(result))
+	}
 
 	return nil
 }

pkg/compiler/compiler.go

@@ -26,9 +26,6 @@ type Options struct {
 
 	// The name of the output for debug info.
 	DebugInfo string
-
-	// Debug outputs a hex encoded string of the generated bytecode.
-	Debug bool
 }
 
 type buildInfo struct {