Remove version Encode method

- Update comment for `scale.Marshal` on `Version`
- Remove `Test_Version_Encode`

lib/runtime/version.go

@@ -28,18 +28,6 @@ type Version struct {
 	TransactionVersion uint32
 }
 
-// Encode returns the scale encoding of the version.
-// Note the encoding contains all the latest Core_version fields as defined in
-// https://spec.polkadot.network/#defn-rt-core-version
-// In other words, decoding older version data with missing fields
-// and then encoding it will result in a longer encoding due to the
-// extra version fields. This however remains compatible since the
-// version fields are still encoded in the same order and an older
-// decoder would succeed with the longer encoding.
-func (v *Version) Encode() (encoded []byte, err error) {
-	return scale.Marshal(*v)
-}
-
 var (
 	ErrDecodingVersionField = errors.New("decoding version field")
 )

lib/runtime/version_test.go

@@ -24,51 +24,6 @@ func concatBytes(slices [][]byte) (concatenated []byte) {
 	return concatenated
 }
 
-func Test_Version_Encode(t *testing.T) {
-	t.Parallel()
-
-	testCases := map[string]struct {
-		version    Version
-		encoding   []byte
-		errWrapped error
-		errMessage string
-	}{
-		"all optional fields set": {
-			version: Version{
-				SpecName:         []byte{1},
-				ImplName:         []byte{2},
-				AuthoringVersion: 3,
-				SpecVersion:      4,
-				ImplVersion:      5,
-				APIItems: []APIItem{{
-					Name: [8]byte{1, 2, 3, 4, 5, 6, 7, 8},
-					Ver:  6,
-				}},
-				TransactionVersion: 7,
-			},
-			encoding: []byte{
-				0x4, 0x1, 0x4, 0x2, 0x3, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0,
-				0x5, 0x0, 0x0, 0x0, 0x4, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
-				0x8, 0x6, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0},
-		},
-	}
-
-	for name, testCase := range testCases {
-		testCase := testCase
-		t.Run(name, func(t *testing.T) {
-			t.Parallel()
-
-			encoded, err := testCase.version.Encode()
-
-			assert.ErrorIs(t, err, testCase.errWrapped)
-			if testCase.errWrapped != nil {
-				require.EqualError(t, err, testCase.errMessage)
-			}
-			assert.Equal(t, testCase.encoding, encoded)
-		})
-	}
-}
-
 func Test_DecodeVersion(t *testing.T) {
 	t.Parallel()
 
@@ -200,7 +155,7 @@ func Test_Version_Scale(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 
-			encoded, err := testCase.version.Encode()
+			encoded, err := scale.Marshal(testCase.version)
 
 			require.NoError(t, err)
 			require.Equal(t, testCase.encoding, encoded)

lib/runtime/wasmer/imports.go

@@ -964,12 +964,14 @@ func ext_misc_runtime_version_version_1(context unsafe.Pointer, dataSpan C.int64
 		return C.int64_t(out)
 	}
 
-	// Note: we must call the `Encode` method and NOT
-	// scale.Marshal or this one would encode the Version
-	// interface pointer instead of the actual struct implementation.
-	// Encode also respects the legacy boolean field of the version
-	// and encodes the version differently if it is set to true.
-	encodedData, err := version.Encode()
+	// Note the encoding contains all the latest Core_version fields as defined in
+	// https://spec.polkadot.network/#defn-rt-core-version
+	// In other words, decoding older version data with missing fields
+	// and then encoding it will result in a longer encoding due to the
+	// extra version fields. This however remains compatible since the
+	// version fields are still encoded in the same order and an older
+	// decoder would succeed with the longer encoding.
+	encodedData, err := scale.Marshal(version)
 	if err != nil {
 		logger.Errorf("failed to encode result: %s", err)
 		return 0