Remove unused const in tools

Author: muXxer

pkg/toolset/benchmark_cpu.go

@@ -2,17 +2,11 @@ package toolset
 
 import (
 	"context"
-	"crypto"
 	"sync/atomic"
 
 	"golang.org/x/crypto/blake2b"
 )
 
-const (
-	// Hash defines the hash function that is used to compute the PoW digest.
-	Hash = crypto.BLAKE2b_256
-)
-
 func cpuBenchmarkWorker(ctx context.Context, powDigest []byte, counter *uint64) {
 	for {
 		select {