refactor: delete extra ctors for chainlock, instantsend, governance

Author: kwvg

src/chainlock/signing.h

@@ -63,6 +63,9 @@ class ChainLockSigner final : public llmq::CRecoveredSigsListener
     uint256 lastSignedMsgHash GUARDED_BY(cs_signer);
 
 public:
+    ChainLockSigner() = delete;
+    ChainLockSigner(const ChainLockSigner&) = delete;
+    ChainLockSigner& operator=(const ChainLockSigner&) = delete;
     explicit ChainLockSigner(CChainState& chainstate, ChainLockSignerParent& clhandler, llmq::CSigningManager& sigman,
                              llmq::CSigSharesManager& shareman, CSporkManager& sporkman, const CMasternodeSync& mn_sync);
     ~ChainLockSigner();

src/governance/governance.h

@@ -275,6 +275,9 @@ class CGovernanceManager : public GovernanceStore, public GovernanceSignerParent
     std::vector<CInv> m_relay_invs GUARDED_BY(cs_relay);
 
 public:
+    CGovernanceManager() = delete;
+    CGovernanceManager(const CGovernanceManager&) = delete;
+    CGovernanceManager& operator=(const CGovernanceManager&) = delete;
     explicit CGovernanceManager(CMasternodeMetaMan& mn_metaman, CNetFulfilledRequestManager& netfulfilledman,
                                 const ChainstateManager& chainman,
                                 const std::unique_ptr<CDeterministicMNManager>& dmnman, CMasternodeSync& mn_sync);

src/governance/signing.h

@@ -59,6 +59,9 @@ class GovernanceSigner
     std::optional<uint256> votedFundingYesTriggerHash{std::nullopt};
 
 public:
+    GovernanceSigner() = delete;
+    GovernanceSigner(const GovernanceSigner&) = delete;
+    GovernanceSigner& operator=(const GovernanceSigner&) = delete;
     explicit GovernanceSigner(CConnman& connman, CDeterministicMNManager& dmnman, GovernanceSignerParent& govman,
                               const CActiveMasternodeManager& mn_activeman, const ChainstateManager& chainman,
                               const CMasternodeSync& mn_sync);

src/instantsend/signing.h

@@ -69,6 +69,9 @@ class InstantSendSigner final : public llmq::CRecoveredSigsListener
     Uint256HashMap<InstantSendLock*> txToCreatingInstantSendLocks GUARDED_BY(cs_creating);
 
 public:
+    InstantSendSigner() = delete;
+    InstantSendSigner(const InstantSendSigner&) = delete;
+    InstantSendSigner& operator=(const InstantSendSigner&) = delete;
     explicit InstantSendSigner(CChainState& chainstate, llmq::CChainLocksHandler& clhandler,
                                InstantSendSignerParent& isman, llmq::CSigningManager& sigman,
                                llmq::CSigSharesManager& shareman, llmq::CQuorumManager& qman, CSporkManager& sporkman,