Removal of circular battery symbol on iPhone iOS 16 locked screen

Touch and hold your Lock Screen to go to the customisation page. Then click on customise and select the Lock Screen. When it goes to the Lock Screen customisation, at the same place where the battery symbol is, there is a minus symbol (-) at the top left where you can remove the symbol (widget). After you have remove the widget, you click on done to save the changes.

There is this symbol as the batteries widget have been added in.