Fix Vigencia import delete order

Controllers/LinesController.cs

@@ -1176,6 +1176,9 @@ namespace line_gestao_api.Controllers
             var startRow = headerRow.RowNumber() + 1;
             var lastRow = ws.LastRowUsed()?.RowNumber() ?? startRow;
 
+            await _db.Notifications
+                .Where(n => n.VigenciaLineId != null)
+                .ExecuteDeleteAsync();
             await _db.VigenciaLines.ExecuteDeleteAsync();
 
             var buffer = new List<VigenciaLine>(600);