`RewindBlockIndex` was made to allow nodes upgrading to new consensus rules post-segwit fork to 
download new consensus data (i.e witnesses) without having to go through a whole IBD. It has been pointed than now really few pre-segwit nodes care to upgrade and that this logic may be irrelevant.

See https://github.com/bitcoin/bitcoin/pull/17737#discussion_r358514335 in review  of #17737 for more context pointers.
}
    nConnectTimeout = args.GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
    if (nConnectTimeout <= 0) {
        nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
    }
    peer_connect_timeout = args.GetArg("-peertimeout", DEFAULT_PEER_CONNECT_TIMEOUT);
    if (peer_connect_timeout <= 0) {
        return InitError(Untranslated("peertimeout cannot be configured with a negative value."));
    }
    if (args.IsArgSet("-minrelaytxfee")) {
        CAmount n = 0;
        if (!ParseMoney(args.GetArg("-minrelaytxfee", ""), n)) {
            return InitError(AmountErrMsg("minrelaytxfee", args.GetArg("-minrelaytxfee", "")));
        }
        
        ::minRelayTxFee = CFeeRate(n);
    } else if (incrementalRelayFee > ::minRelayTxFee) {
        
        ::minRelayTxFee = incrementalRelayFee;
        LogPrintf("Increasing minrelaytxfee to %s to match incrementalrelayfee\n",::minRelayTxFee.ToString());
    }
    
    
    if (args.IsArgSet("-blockmintxfee")) {
        CAmount n = 0;
        if (!ParseMoney(args.GetArg("-blockmintxfee", ""), n))
            return InitError(AmountErrMsg("blockmintxfee", args.GetArg("-blockmintxfee", "")));
    }