Hello there! This time we will learn how to deactivate the Demo Store notice at your Magento site. For deleting that information from your store, please, follow the steps indicated below.
Log into your admin panel and go to System > Configuration > Design:
You can see there an option called HTML Head in the left-side menu. The Display Demo Store Notice option is at the bottom of this section.
Set this to No and click on a Save Config button.
Feel free to check the detailed video tutorial below: