diff --git a/models/acc_enedis_cdc.py b/models/acc_enedis_cdc.py
index 60a197395701c45dc63bcdf86e0b4cfe8624578f..4f35eb0f1fbbd231da1d03a8b5b8929cacedd275 100644
--- a/models/acc_enedis_cdc.py
+++ b/models/acc_enedis_cdc.py
@@ -50,28 +50,6 @@ class AccEnedisCdc(models.Model):
 
         return display_hourly_curves, step, step_display_curve
 
-    @api.model
-    def _read_group_process_groupby(self, gb, query):
-        """
-        Overrides models method to avoid getting wrong display format
-        And manage granluarity = "minute" for 30 minutes curves
-        """
-        initial_gb = gb
-        if self._context.get("portal_acc_curves") and gb == "date_slot:minute":
-            gb = "date_slot:hour"
-        res = super()._read_group_process_groupby(gb, query)
-        if self._context.get("portal_acc_curves"):
-            if res["type"] == "datetime":
-                res["display_format"] = "dd/MM/yyyy HH:mm"
-            if initial_gb == "date_slot:minute":
-                res["groupby"] = res["groupby"].replace("hour", "minute")
-                res["interval"] = relativedelta(minutes=30)
-                res["granularity"] = res["granularity"].replace("hour", "minute")
-                res["qualified_field"] = res["qualified_field"].replace(
-                    "hour", "minute"
-                )
-        return res
-
     @api.model
     def _get_curves(
         self,