Remove FieldsUnmarshaler and FieldsMarshaler

nbt/interface.go

@@ -10,16 +10,3 @@ type Marshaler interface {
 	TagType() byte
 	MarshalNBT(w io.Writer) error
 }
-
-// FieldsUnmarshaler is a type can hold many Tags just like a TagCompound.
-//
-// If and only if a type which implements this interface is used as an anonymous field of a struct,
-// and didn't set a struct tag, the content it holds will be considered as in the outer struct.
-type FieldsUnmarshaler interface {
-	UnmarshalField(tagType byte, tagName string, r DecoderReader) (ok bool, err error)
-}
-
-// FieldsMarshaler is similar to FieldsUnmarshaler, but for marshaling.
-type FieldsMarshaler interface {
-	MarshalFields(w io.Writer) (ok bool, err error)
-}