adm: Simplify LocalClient.SendRawTransaction()

The old code was there before Copy() method was introduced.
It was also supposed to check errors, however, they are already checked
server-side.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

cmd/frostfs-adm/internal/modules/morph/helper/local_client.go

@@ -308,13 +308,7 @@ func (l *LocalClient) InvokeScript(script []byte, signers []transaction.Signer)
 }
 
 func (l *LocalClient) SendRawTransaction(tx *transaction.Transaction) (util.Uint256, error) {
-	// We need to test that transaction was formed correctly to catch as many errors as we can.
-	bs := tx.Bytes()
-	_, err := transaction.NewTransactionFromBytes(bs)
-	if err != nil {
-		return tx.Hash(), fmt.Errorf("invalid transaction: %w", err)
-	}
-
+	tx = tx.Copy()
 	l.transactions = append(l.transactions, tx)
 	return tx.Hash(), nil
 }