_pkg.dev: drop mgetaddr "implementation"

It has no real payload, so all of this is just useless.

_pkg.dev/wire/payload/mgetaddr.go

@@ -1,30 +0,0 @@
-package payload
-
-import (
-	"io"
-
-	"github.com/CityOfZion/neo-go/pkg/wire/command"
-)
-
-//GetAddrMessage represents a GetAddress message on the neo-network
-type GetAddrMessage struct{}
-
-// NewGetAddrMessage returns a GetAddrMessage object
-func NewGetAddrMessage() (*GetAddrMessage, error) {
-	return &GetAddrMessage{}, nil
-}
-
-// DecodePayload Implements Messager interface
-func (v *GetAddrMessage) DecodePayload(r io.Reader) error {
-	return nil
-}
-
-// EncodePayload Implements messager interface
-func (v *GetAddrMessage) EncodePayload(w io.Writer) error {
-	return nil
-}
-
-// Command Implements messager interface
-func (v *GetAddrMessage) Command() command.Type {
-	return command.GetAddr
-}

_pkg.dev/wire/payload/mgetaddr_test.go

@@ -1,24 +0,0 @@
-package payload
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/CityOfZion/neo-go/pkg/wire/util/Checksum"
-
-	"github.com/CityOfZion/neo-go/pkg/wire/command"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestNewGetAddr(t *testing.T) {
-
-	getAddrMessage, err := NewGetAddrMessage()
-	assert.Equal(t, nil, err)
-
-	assert.Equal(t, command.GetAddr, getAddrMessage.Command())
-
-	buf := new(bytes.Buffer)
-
-	assert.Equal(t, int(3806393949), int(checksum.FromBuf(buf)))
-	assert.Equal(t, int(0), len(buf.Bytes()))
-}