@harborgcan you explain a bit more from where you would like to remove the SharePoint option.... if you are talking about any SharePoint list the best option is to use the Power Apps customization option if that is something else please explain and give more details..
This is something that can be done, but you will need a developer to write a custom SPFx Extension for you. Bear also in mind that in general it's advisable to avoid those kind of customizations
