orm fix for support custom field

orm/types.go

@@ -16,7 +16,6 @@ type Fielder interface {
 	FieldType() int
 	SetRaw(interface{}) error
 	RawValue() interface{}
-	Clean() error
 }
 
 type Ormer interface {
@@ -84,17 +83,6 @@ type RawSeter interface {
 	Prepare() (RawPreparer, error)
 }
 
-type IFieldError interface {
-	Name() string
-	Error() error
-}
-
-type IFieldErrors interface {
-	Get(string) IFieldError
-	Set(string, IFieldError)
-	List() []IFieldError
-}
-
 type stmtQuerier interface {
 	Close() error
 	Exec(args ...interface{}) (sql.Result, error)