ch08: Drop 'Falcon Relay Network'

This has been down for several months; doesn't seem like it's coming
back.

ch08.asciidoc

@@ -56,8 +56,6 @@ A _Bitcoin Relay Network_ is a network that attempts to minimize the latency in
 
 ((("Fast Internet Bitcoin Relay Engine (FIBRE)")))((("Compact Block optimization")))The original Bitcoin Relay Network was replaced in 2016 with the introduction of the _Fast Internet Bitcoin Relay Engine_ or https://bitcoinfibre.org[_FIBRE_], also created by core developer Matt Corallo. FIBRE is a UDP-based relay network that relays blocks within a network of nodes. FIBRE implements _compact block_ optimization to further reduce the amount of data transmitted and the network latency.
 
-((("Falcon Relay Network")))Another relay network (still in the proposal phase) is https://www.falcon-net.org/about[_Falcon_], based on research at Cornell University. Falcon uses "cut-through-routing" instead of "store-and-forward" to reduce latency by propagating parts of blocks as they are received rather than waiting until a complete block is received.
-
 Relay networks are not replacements for bitcoin's P2P network. Instead they are overlay networks that provide additional connectivity between nodes with specialized needs. Like freeways are not replacements for rural roads, but rather shortcuts between two points with heavy traffic, you still need small roads to connect to the freeways.
 
 === Network Discovery