Update veggie seasons README.md (#2479)

Author: mit-mit

veggieseasons/README.md

@@ -1,10 +1,8 @@
 # Veggie Seasons
 
-An iOS app that shows which fruits and vegetables are currently in season. It
+An iOS sample app that shows which fruits and vegetables are currently in season. It
 showcases Flutter's Cupertino package.
 
-[Available now in the App Store!](https://itunes.apple.com/is/app/veggie-seasons/id1450855435)
-
 **NOTE:** While Flutter supports many platforms, this application is designed
 specifically for iOS. It's not intended to be run on Android, web, or desktop.