Remove some unused constants.

node/Constants.hpp

@@ -189,11 +189,6 @@
  */
 #define ZT_RX_QUEUE_SIZE 64
 
-/**
- * RX queue entries older than this do not "exist"
- */
-#define ZT_RX_QUEUE_EXPIRE 4000
-
 /**
  * Length of secret key in bytes -- 256-bit -- do not change
  */
@@ -209,11 +204,6 @@
  */
 #define ZT_HOUSEKEEPING_PERIOD 60000
 
-/**
- * How long to remember peer records in RAM if they haven't been used
- */
-#define ZT_PEER_IN_MEMORY_EXPIRATION 600000
-
 /**
  * Delay between WHOIS retries in ms
  */
@@ -232,7 +222,7 @@
 /**
  * Maximum latency to allow for OK(HELLO) before packet is discarded
  */
-#define ZT_HELLO_MAX_ALLOWABLE_LATENCY 60000
+#define ZT_HELLO_MAX_ALLOWABLE_LATENCY 120000
 
 /**
  * Maximum number of ZT hops allowed (this is not IP hops/TTL)
@@ -241,11 +231,6 @@
  */
 #define ZT_RELAY_MAX_HOPS 3
 
-/**
- * Maximum number of upstreams to use (far more than we should ever need)
- */
-#define ZT_MAX_UPSTREAMS 64
-
 /**
  * Expire time for multicast 'likes' and indirect multicast memberships in ms
  */