remove "checkorder" and "reply" P2P commands

These command are a leftover from send-to-IP transactions, which have been
removed a long time ago.
Also removes CNode::mapRequests and CNode::PushRequests, as these were
only used for the mentioned commands.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/main.h b/src/main.h
index 68302b85ac..53341dc36d 100644
--- a/src/main.h
+++ b/src/main.h
@@ -20,7 +20,6 @@ class CReserveKey;
 
 class CAddress;
 class CInv;
-class CRequestTracker;
 class CNode;
 
 static const unsigned int MAX_BLOCK_SIZE = 1000000;