lint: update and appease the linter (#6101)

Closes: #5775

state/state_test.go

@@ -18,7 +18,6 @@ import (
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	"github.com/tendermint/tendermint/libs/kv"
-	"github.com/tendermint/tendermint/libs/rand"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 	sm "github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/types"
@@ -347,7 +346,7 @@ func genValSetWithPowers(powers []int64) *types.ValidatorSet {
 	for i := 0; i < size; i++ {
 		totalVotePower += powers[i]
 		val := types.NewValidator(ed25519.GenPrivKey().PubKey(), powers[i])
-		val.ProposerPriority = rand.Int64()
+		val.ProposerPriority = tmrand.Int64()
 		vals[i] = val
 	}
 	valSet := types.NewValidatorSet(vals)

state/txindex/kv/kv.go

@@ -583,7 +583,6 @@ LOOP:
 	return filteredHashes
 }
 
-///////////////////////////////////////////////////////////////////////////////
 // Keys
 
 func isTagKey(key []byte) bool {