Siri has grown smarter with iOS 9 and now has the ability to make suggestions when you make searches with Spotlight. With a simple left swipe on the home screen, iPhone users are given a list of suggested apps, contacts, locations, and frequently accessed content, making it easier to quickly navigate your phone. However, if you find this new feature irrelevant, and wish to disable it, there's a simple procedure to do so.
Turn Off Siri Suggestions in Spotlight Search
Go to Settings and click on General. Select the Spotlight Search button, and toggle Siri Suggestions off.