Revert "V0.12.0.x fix budget submission"

[eduffield222]

Reverts #820

nTime was actually being queried from the verified blockchain, so that a user could not lie about when they first submitted the proposal. This value starts at 0, then is assigned via this undocumented feature.

int conf = GetIXConfirmations(nTxCollateralHash);
if (nBlockHash != uint256(0)) {
    BlockMap::iterator mi = mapBlockIndex.find(nBlockHash);
    if (mi != mapBlockIndex.end() && (*mi).second) {
        CBlockIndex* pindex = (*mi).second;
        if (chainActive.Contains(pindex)) {
            conf += chainActive.Height() - pindex->nHeight + 1;
            nTime = pindex->nTime;
        }
    }
}

[UdjinM6]

ACK 0b2e2a4

[schinzelh]

ACK 0b2e2a4

As soon as Travis confirms i will squash and merge and build the release 0.12.0.58