Revert "add debug print for UpperMacUplinkFragmentation state change"

This reverts commit 568416b.

include/l2/upper_mac_fragments.hpp

@@ -213,7 +213,6 @@ class UpperMacUplinkFragmentation {
     /// \return an optional reconstructed control plane signalling packet when reconstuction was successful
     auto change_state(State new_state,
                       const UpperMacCPlaneSignallingPacket& fragment) -> std::optional<UpperMacCPlaneSignallingPacket> {
-        std::cout << fragment << std::endl;
         const auto& address = fragment.address_;
         auto& state = state_per_address_[address];
         auto& fragments = fragments_per_address_[address];