[tor-bugs] #12219 [Tor]: Clean dead code from entrynodes.c

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#12219: Clean dead code from entrynodes.c
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 Reporter:  asn        |          Owner:
     Type:  defect     |         Status:  new
 Priority:  trivial    |      Milestone:  Tor: 0.2.6.x-final
Component:  Tor        |        Version:
 Keywords:  tor-guard  |  Actual Points:
Parent ID:             |         Points:
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 I see dead code in `entrynodes.c`.

 There are three blocks of `#if 0` code. One of them is particularly
 annoying because it's in the middle of `choose_random_entry_impl()` which
 is an important function, and it makes it harder to read.

 I would say that all dead code needs to go to the graveyard (git history
 in our case).

 (We '''might''' want to keep the dead code in
 `control_event_guard_deferred()`, which is currently a NOP, just to show
 what that function used to be.)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12219>
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