to delete a Home Location that has nothing in it:
- Login to IDE at https://account.smartthings.com
- Goto Locations
- If you have multiple Locations, select the invalid one
- Make sure there is no Hub associated to it
- Scroll to the right and click Edit
- If the Default Location shows “true” (will be read only)
- If it is “true”, go back to Locations and select your primary (Real) location and set the default location to “true”
- Now you can edit/delete the additional Home location as it will automatically be set to “false”.
If that does not work, please contact ST support at https://support.smartthings.com 