Answer:In order to hide the optional filers from the homepage search bix option,the super admin have to do some necessary settings from the admin panel, which are as followes:
1.Login to the admin panel.
2.Select the "Settings" option from the menue list.
3.Select the "Template Settings" option .
4.Select the "Search Box' option
5.There you will be able to hide the "Optional filters" option from the "Devivery", "Pickup" And " Reservation" sections.
6.After the settings is done,please save the settings.
This video may help you...