How to Remove Sidebar on Samsung Phones and Tablets
1. First, put your figure at the top of your phone’s screen and scroll it all the way down. It will bring the notification area in front of you.
2. Now, several icons will be displayed and you have to scroll to the left until you see the Multi Window option.
3. Once you tap on the icon, it’ll give you the option to disable the sidebar app. Hit the disable option.
4. The sidebar will be removed.