how to disable lock screen
How to disable Lock Screen….avoid necessity to use thumb or passcode- over and over
iPad 2, iOS 9
Question marked as
You can try to disable a passcode require but since this leads your device wide open in terms of security you may not find you can do that if you use certain services.
To turn it off, do the opposite of turning it on, as outlined in:
Use a passcode with your iPhone, iPad, or iPod touch - Apple Support
I recommend instead reviewing the settings presented at the end of the document and see if you can adjust things to meet your satisfaction.