* v1alpha1 validators: catch possible reqState nil case
* Minor format of error log
Co-authored-by: terence tsao <terence@prysmaticlabs.com>
Co-authored-by: Radosław Kapka <rkapka@wp.pl>
* Move interfaces from github.com/prysmaticlabs/prysm/beacon-chain/state/interface to github.com/prysmaticlabs/prysm/beacon-chain/state
* remove/rename state2