chore(encoder): no more useless types

pkg/encoder/encoder.go

@@ -1,24 +1,5 @@
 package encoder
 
-import "reflect"
-
-// FieldConfig defines the structure of a single field in the payload
-type FieldConfig struct {
-	Name      string
-	Start     int
-	Length    int
-	Transform func(interface{}) interface{}
-	Optional  bool
-	Hex       bool
-}
-
-// PayloadConfig defines the overall structure of the payload, including the target struct type
-type PayloadConfig struct {
-	Fields          []FieldConfig
-	TargetType      reflect.Type
-	StatusByteIndex *int // can be nil
-}
-
 type Encoder interface {
 	Encode(interface{}, int16, string) (interface{}, interface{}, error)
 }