Merge #10560: Remove unused constants

dce8239 Comment out unused constant REJECT_DUST (practicalswift)
3289ef4 Remove unused constant MEMPOOL_GD_VERSION (practicalswift)

Tree-SHA512: 8dd772c963037cd0a1db0d5bf5f7a5cce3f5cd8fb6fa983949f9f0c1c8312ffd251a62c1e5d32f3584d2bcc562d8c8a9bf7900609dee9a4f12898caa2be9c38f

src/consensus/validation.h

@@ -14,7 +14,7 @@ static const unsigned char REJECT_INVALID = 0x10;
 static const unsigned char REJECT_OBSOLETE = 0x11;
 static const unsigned char REJECT_DUPLICATE = 0x12;
 static const unsigned char REJECT_NONSTANDARD = 0x40;
-static const unsigned char REJECT_DUST = 0x41;
+// static const unsigned char REJECT_DUST = 0x41; // part of BIP 61
 static const unsigned char REJECT_INSUFFICIENTFEE = 0x42;
 static const unsigned char REJECT_CHECKPOINT = 0x43;
 

src/version.h

@@ -27,9 +27,6 @@ static const int CADDR_TIME_VERSION = 31402;
 //! BIP 0031, pong message, is enabled for all versions AFTER this one
 static const int BIP0031_VERSION = 60000;
 
-//! "mempool" command, enhanced "getdata" behavior starts with this version
-static const int MEMPOOL_GD_VERSION = 60002;
-
 //! "filter*" commands are disabled without NODE_BLOOM after and including this version
 static const int NO_BLOOM_VERSION = 70011;