Remove dead linklayer code

llarp/CMakeLists.txt

@@ -166,13 +166,13 @@ set(LIB_SRC
   handlers/exit.cpp
   handlers/null.cpp
   handlers/tun.cpp
-  link/encoder.cpp
+  link/iwp_internal.cpp
   link/iwp.cpp
   link/server.cpp
   link/session.cpp
   link/utp.cpp
-  messages/dht.cpp
   messages/dht_immediate.cpp
+  messages/dht.cpp
   messages/discard.cpp
   messages/exit.cpp
   messages/link_intro.cpp

llarp/link/encoder.cpp

@@ -1 +0,0 @@
-#include <link/encoder.hpp>

llarp/link/encoder.hpp

@@ -1,18 +0,0 @@
-#ifndef LLARP_LINK_ENCODER_HPP
-#define LLARP_LINK_ENCODER_HPP
-
-struct llarp_buffer_t;
-
-namespace llarp
-{
-  struct KeyExchangeNonce;
-  class RouterContact;
-
-  /// encode Link Introduce Message onto a buffer
-  /// if router is nullptr then the LIM's r member is omitted.
-  bool
-  EncodeLIM(llarp_buffer_t* buff, const RouterContact* router,
-            const KeyExchangeNonce& n);
-}  // namespace llarp
-
-#endif