CORE: Re-enable header sync timeout
CORE: Re-enable header sync timeout

We disable this for initial launch, now that there are a healthy number of peers the check is possible again

nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official