Yes, you can delete all iOS Apps from Products.
So, go to this path:
~/Library/Developer/Xcode/Products
and remove any apps.
Be sure to remove any related archives in
~/Library/Developer/Xcode/Archives
which are divided by date archived.
If you have any difficulty to get the Library folder all you need to do is hit Command+Shift+G from the Mac desktop and type in ~/Library to temporarily access the Library directory in the Finder.