Removed old test for memorydb. (Rustfmt)
Removed old test for memorydb. (Rustfmt)

alekseysidorov/exonum,exonum/exonum,exonum/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,alekseysidorov/exonum