Revert "scheduled charging: fix missing chargemode changed timestamp after plugging (openWB#2452)"

This reverts commit d870aff.

Author: LKuemmel

packages/control/chargepoint/chargepoint.py

@@ -646,7 +646,7 @@ def update(self, ev_list: Dict[str, Ev]) -> None:
                         max_phase_hw,
                         self.cp_ev_support_phase_switch(),
                         self.template.data.charging_type,
-                        self.data.control_parameter.timestamp_chargemode_changed or create_timestamp(),
+                        self.data.control_parameter.timestamp_chargemode_changed,
                         self.data.set.log.imported_since_plugged)
                     phases = self.get_phases_by_selected_chargemode(phases)
                     phases = self.set_phases(phases)