* Remove Blockstore member variable from BlockCommitmentCache * Hoist is_confirmed_rooted() to its only caller BlockCommitmentCache no longer depends on Blockstore * Move BlockCommitmentCache to solana_runtime
* Remove Blockstore member variable from BlockCommitmentCache * Hoist is_confirmed_rooted() to its only caller BlockCommitmentCache no longer depends on Blockstore * Move BlockCommitmentCache to solana_runtime