Revert more changes since 6193 in hopes of fixing the scrolling bug.

iOS/Article/ImageViewController.swift

@@ -25,16 +25,6 @@ class ImageViewController: UIViewController {
 		return imageScrollView.zoomedFrame
 	}
 	
-	override var keyCommands: [UIKeyCommand]? {
-		return [
-			UIKeyCommand(
-				title: NSLocalizedString("Close Image", comment: "Close Image"),
-				action: #selector(done(_:)),
-				input: " "
-			)
-		]
-	}
-	
 	override func viewDidLoad() {
         super.viewDidLoad()