refactor: drop unused function, rename GetAppsNames

cli/app/logs.go

@@ -111,7 +111,7 @@ var appLogsCommand = &cli.Command{
 		return nil
 	},
 	BashComplete: func(c *cli.Context) {
-		appNames, err := config.GetAppsNames()
+		appNames, err := config.GetAppNames()
 		if err != nil {
 			return
 		}