OS X Photos App: Remove Already Imported from iOS Device

In the switch from iPhoto to Photos I am looking to find some of the functionality from the old program that has gone missing. I used to sync my iPhone with my MacBook Pro and upon finishing have the option to remove the already imported photos from my iPhone. Now I do not have that option or anything similar that I can tell. I cannot even select them all and delete them from my MacBook Pro. I am left either importing them again (which creates duplicates) just to delete them automatically, or I have to do it by hand.

I cannot understand why such a useful feature (Removing Items that had already been automatically imported by iCloud) has been removed.