[release/1.4.6] cmd/geth, console: fix reviewer issues

(cherry picked from commit da729e5b38)

cmd/geth/accountcmd.go

@@ -216,12 +216,12 @@ func getPassPhrase(prompt string, confirmation bool, i int, passwords []string)
 	if prompt != "" {
 		fmt.Println(prompt)
 	}
-	password, err := console.TerminalPrompter.PromptPassword("Passphrase: ")
+	password, err := console.Stdin.PromptPassword("Passphrase: ")
 	if err != nil {
 		utils.Fatalf("Failed to read passphrase: %v", err)
 	}
 	if confirmation {
-		confirm, err := console.TerminalPrompter.PromptPassword("Repeat passphrase: ")
+		confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
 		if err != nil {
 			utils.Fatalf("Failed to read passphrase confirmation: %v", err)
 		}

cmd/geth/chaincmd.go

@@ -117,7 +117,7 @@ func exportChain(ctx *cli.Context) {
 }
 
 func removeDB(ctx *cli.Context) {
-	confirm, err := console.TerminalPrompter.PromptConfirm("Remove local database?")
+	confirm, err := console.Stdin.PromptConfirm("Remove local database?")
 	if err != nil {
 		utils.Fatalf("%v", err)
 	}

cmd/geth/main.go

@@ -236,7 +236,7 @@ participating.
 	app.After = func(ctx *cli.Context) error {
 		logger.Flush()
 		debug.Exit()
-		console.TerminalPrompter.Close() // Resets terminal mode.
+		console.Stdin.Close() // Resets terminal mode.
 		return nil
 	}
 }