remove unused NOBLKS_VERSION_{START,END} constants

src/version.h

@@ -24,10 +24,6 @@ static const int MIN_PEER_PROTO_VERSION = GETHEADERS_VERSION;
 //! if possible, avoid requesting addresses nodes older than this
 static const int CADDR_TIME_VERSION = 31402;
 
-//! only request blocks from nodes outside this range of versions
-static const int NOBLKS_VERSION_START = 32000;
-static const int NOBLKS_VERSION_END = 32400;
-
 //! BIP 0031, pong message, is enabled for all versions AFTER this one
 static const int BIP0031_VERSION = 60000;