For the features section, you need to delete the segment named “featured-app” in the page section labeled Features under WP Admin->Page Sections tab. as shown below –
https://docs.google.com/file/d/0B9j6FQo4cSQFUnRKdUlNLVRWOGs/edit?usp=drivesdk
Or uncheck the showcase page section in the theme options panel if you want to retain the above segment. Thanks