[#1582] *: Fix linter warnings

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/morph/client/fee.go

@@ -2,12 +2,6 @@ package client
 
 import "github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
 
-// customFees represents source of customized per-operation fees.
-// Can be initialized using var declaration.
-//
-// Instances are not thread-safe, so they mean initially filling, and then only reading.
-type customFees map[string]fixedn.Fixed8
-
 // setFeeForMethod sets fee for the operation executed using specified contract method.
 func (x *fees) setFeeForMethod(method string, fee fixedn.Fixed8) {
 	if x.customFees == nil {

pkg/services/container/morph/executor.go

@@ -152,9 +152,7 @@ func (s *morphExecutor) Get(ctx context.Context, body *container.GetRequestBody)
 		return nil, err
 	}
 
-	var sigV2 *refs.Signature
-
-	sigV2 = new(refs.Signature)
+	sigV2 := new(refs.Signature)
 	cnr.Signature.WriteToV2(sigV2)
 
 	var tokV2 *sessionV2.Token

pkg/util/attributes/parser.go

@@ -69,12 +69,3 @@ func replaceEscaping(target string, rollback bool) (s string) {
 
 	return
 }
-
-func hasString(lst []string, v string) bool {
-	for i := range lst {
-		if lst[i] == v {
-			return true
-		}
-	}
-	return false
-}