deprecation fixed

api/fx/oracle/internal/service/oracle/math.go

@@ -3,7 +3,6 @@ package oracle
 import (
 	"math/big"
 	"strings"
-	"time"
 
 	"github.com/tech/sendico/fx/storage/model"
 	"github.com/tech/sendico/pkg/decimal"
@@ -61,7 +60,3 @@ func priceFromRate(rate *model.RateSnapshot, side fxv1.Side) (*big.Rat, error) {
 
 	return ratFromString(priceStr)
 }
-
-func timeFromUnixMilli(ms int64) time.Time {
-	return time.Unix(0, ms*int64(time.Millisecond))
-}