update README.md

Author: ajungg

README.md

@@ -85,14 +85,6 @@ Snabble.setup(application, config, object : Snabble.SetupCompletionListener {
         // check in to the first shop - you can use CheckInManager if you want
         // to use geofencing
         Snabble.checkedInShop = project.shops.first()
-
-        // this is done on the background and can be done at any time
-        // a fully downloaded product database allows for scanning products while
-        // being offline
-        //
-        // if the product database is still downloading or you did not call update()
-        // online request will be used in the mean time
-        project.productDatabase.update()
     }
 })
 ```