implement atlas for db migration

main.go

@@ -60,11 +60,6 @@ func main() {
 	defer database.Close()
 	databaseService := services.NewDatabaseService(database)
 
-	// Setup weather_readings table
-	if err := databaseService.CreateTable(); err != nil {
-		log.Fatalf("failed to create table: %v", err)
-	}
-
 	// Create services
 	weatherService := services.NewWeatherService(config.APIKey)