internal/libs: delete unused functionality (#7569)

internal/state/execution.go

@@ -9,7 +9,6 @@ import (
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/internal/eventbus"
-	"github.com/tendermint/tendermint/internal/libs/fail"
 	"github.com/tendermint/tendermint/internal/mempool"
 	"github.com/tendermint/tendermint/internal/proxy"
 	"github.com/tendermint/tendermint/libs/log"
@@ -171,15 +170,11 @@ func (blockExec *BlockExecutor) ApplyBlock(
 		return state, ErrProxyAppConn(err)
 	}
 
-	fail.Fail() // XXX
-
 	// Save the results before we commit.
 	if err := blockExec.store.SaveABCIResponses(block.Height, abciResponses); err != nil {
 		return state, err
 	}
 
-	fail.Fail() // XXX
-
 	// validate the validator updates and convert to tendermint types
 	abciValUpdates := abciResponses.EndBlock.ValidatorUpdates
 	err = validateValidatorUpdates(abciValUpdates, state.ConsensusParams.Validator)
@@ -210,16 +205,12 @@ func (blockExec *BlockExecutor) ApplyBlock(
 	// Update evpool with the latest state.
 	blockExec.evpool.Update(state, block.Evidence.Evidence)
 
-	fail.Fail() // XXX
-
 	// Update the app hash and save the state.
 	state.AppHash = appHash
 	if err := blockExec.store.Save(state); err != nil {
 		return state, err
 	}
 
-	fail.Fail() // XXX
-
 	// Prune old heights, if requested by ABCI app.
 	if retainHeight > 0 {
 		pruned, err := blockExec.pruneBlocks(retainHeight)