Open the Settings app (ironically, you could use the Search button to find it!) and swipe down until you see an entry marked Home Screen. It should be in the third bank of options. Tap this.
On the next screen, you’ll see a toggle under “Search” labelled “Show on Home Screen.” Tap this so it changes from green to light gray. The feature is now turned off.
Swipe down to search
Go back to the home screen and you’ll see that the search button has been replaced by the old set of dots that show how many home pages you have and which one you’re on. To search your apps and files, you’ll only be able to swipe down on the screen like before. And if you change your mind, remember that you can go back to Settings > Home Screen and reactivate the feature at any time.