Default ssid

[Rburgess]

how do i remove a default SSID? 

[KarstenI]

All default SSIDs are always there. Just disable all that you don't need.

[Rburgess]

Does that remove it's accessibility to other APs?

[cmr]

Yes, just disable any that you don't want and they will be completely inactive and not seen.

[KarstenI]

A disabled SSID is disabled on all APs. An enabled SSID can be controlled on which APs you want to use the SSID.