They have only killed it for Linux and Android, and it never existed for iOS. You can still target Windows and OSX users with it, do not despair.
I wouldn't be too sure about OS X. Like many Mac users, I block FLASH as a system security precaution on OS X. If any web site insists on using FLASH I most certainly do not do continue with them.
I also have the 3rd generation iPad etc. I don't miss FLASH there either, especially the common FLASH ADVERTISING at cellular data rates for the unwanted FLASH.
I have noticed that major commercial sites that serve flash on Windows have adapted to the new reality of why their best customers began passing them up by making their own custom iPad/iPhone mobile apps.
Prove this for yourself. Go to Apples' app store and type in the name of any major vendor or manufacturer who directly sells to the public. If you do not get a hit and at least one good iPAD app that firm like RIM or Nokia isn't doing well in today's economy, probably do to bad management.
That is the new reality of the POST PC ERA. You either lose your dependence on flash or die in the new mobile market place.