Method on_comp_node_finalize

imperative/src/impl/ops/rng.cpp:70–74

    };

    std::shared_ptr<void> on_comp_node_finalize() override {
        MGB_LOCK_GUARD(m_mtx);
        m_handle2ops.clear();
        return {};
    }

    std::unordered_map<Handle, std::unordered_map<OpTypeInfo, DnnOpWithMutex>>
            m_handle2ops;