As per CRA, T# Box 24 is Foreign business income and should be included line 13500 - (Net Self Employment income) of your return. So you need to fill out a T2125 self-employment form, which is why TurboTax won't let you delete it.
You can use your own address as your place of self-employment. Where do you do you do your accounting, taxes, storage of financial records, etc? Probably at home, so your home address is a valid location to use as your "place of business".
