After doing some research online, I see that if a DC is tombstoned, you need to remove it from the network, run /forceremoval, and metadata cleanup.
However, I am a bit confused. Especially since i may not need to promote this DC again. I was thinking about permanently removing it.
After disconnecting from the network and running /forceremoval i was trying to run metadata cleanup. But I am confused, shouldn't i do this from another working domain controller?
If this is true, after running metadata cleanup, is there anything else i need to perform so that my domain controllers no longer see any records of my tombstoned DC?
BTW this DC which is tombstoned does not carry out any FSMO roles.