linter: fix nolintlint warnings (#6257)

crypto/hash.go

@@ -6,6 +6,6 @@ import (
 
 func Sha256(bytes []byte) []byte {
 	hasher := sha256.New()
-	hasher.Write(bytes) //nolint:errcheck // ignore error
+	hasher.Write(bytes)
 	return hasher.Sum(nil)
 }

crypto/merkle/proof_value.go

@@ -80,7 +80,7 @@ func (op ValueOp) Run(args [][]byte) ([][]byte, error) {
 	}
 	value := args[0]
 	hasher := tmhash.New()
-	hasher.Write(value) //nolint: errcheck // does not error
+	hasher.Write(value)
 	vhash := hasher.Sum(nil)
 
 	bz := new(bytes.Buffer)