remove cache

Author: Marco Aust

charger/cfos.go

@@ -8,7 +8,6 @@ import (
 	"github.com/evcc-io/evcc/api"
 	"github.com/evcc-io/evcc/util"
 	"github.com/evcc-io/evcc/util/modbus"
-	"github.com/evcc-io/evcc/util/sponsor"
 )
 
 const (
@@ -32,8 +31,6 @@ const (
 // https://www.cfos-emobility.de/en-gb/cfos-power-brain/modbus-registers.htm
 type CfosPowerBrain struct {
 	conn *modbus.Connection
-
-	cachedTotalEnergy float64
 }
 
 func init() {
@@ -64,10 +61,6 @@ func NewCfosPowerBrain(ctx context.Context, uri string, id uint8) (api.Charger,
 		return nil, err
 	}
 
-	if !sponsor.IsAuthorized() {
-		return nil, api.ErrSponsorRequired
-	}
-
 	log := util.NewLogger("cfos")
 	conn.Logger(log.TRACE)