Revert "dojo: support running threads from other desks"
Revert "dojo: support running threads from other desks"

This reverts commit 446e53318abcfbb3246bed3c3c82956e667daf85.

urbit/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit