It was deleted as it was too outdated.
Ok. But I think a red and bold line on top to mention it as 'outdated' would have been better.
This would save 'page not found' error and most important the B4X codes works for as far as Android 4 (I have them working).
Also many members make apps as hobby / personal or distribute apk, so GPlay restriction etc. does not matter for old codes.
There will be always a better code in future but we should not remove the ones which helped in past.
My 2 cents.