Method removeIf

src/cpp-ethereum/libethereum/BlockQueue.h:118–123

	template<class Pred>
	std::vector<T> removeIf(Pred _pred)
	{
		auto const removedBegin = std::remove_if(m_queue.begin(), m_queue.end(), _pred);

		return removeRange(removedBegin, m_queue.end());
	}

	bool replace(h256 const& _hash, T&& _t)
	{