Android userlock remove without losing userdata - No need root

First install sfk.exe to your computer ...

Dump userdata and type this command to userdata.img.

sfk.exe replace userdata.img -binary "/70617373776f72642e6b6579/000000000000000000000000/" -dump -yes

sfk.exe replace userdata.img -binary "/676573747572652e6b6579/00000000000000000000000/" -dump -yes

Then re-flash edited userdata file to your device !!