Removed history service

engine/ratingplan.go

@@ -19,10 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 package engine
 
 import (
-	"encoding/json"
 	"math"
-
-	"github.com/cgrates/cgrates/history"
 )
 
 /*
@@ -99,16 +96,6 @@ func (rp *RatingPlan) Equal(o *RatingPlan) bool {
 	return rp.Id == o.Id
 }
 
-// history record method
-func (rp *RatingPlan) GetHistoryRecord() history.Record {
-	js, _ := json.Marshal(rp)
-	return history.Record{
-		Id:       rp.Id,
-		Filename: history.RATING_PLANS_FN,
-		Payload:  js,
-	}
-}
-
 // IsValid determines if the rating plan covers a continous period of time
 func (rp *RatingPlan) isContinous() bool {
 	weekdays := make([]int, 7)