in resources/views/restaurantowner/viewOrder.blade.php
replace
<tr>
<td class="text-left td-title">{{__('storeDashboard.ovDeliveryCharge')}}</td>
<td class="text-right td-data"> {{ config('appSettings.currencyFormat') }}{{ $order->delivery_charge }} </td>
</tr>
with
<!--<tr>-->
<!-- <td class="text-left td-title">{{__('storeDashboard.ovDeliveryCharge')}}</td>-->
<!-- <td class="text-right td-data"> {{ config('appSettings.currencyFormat') }}{{ $order->delivery_charge }} </td>-->
<!--</tr>-->