hygiene: Phase 3 follow-up — sweep commented-out debug cruft

Remove ~116 commented-out debug/dead-code lines the audit flagged as noise
(findings F6/F7/F15/F22): the Komodo "%s tikN" step-tracer comments and other
commented-out fprintf/printf/LogPrintf/std::cerr calls threaded through
AppInit2 (init.cpp), CreateNewBlock and the miner loops (miner.cpp), plus a
few commented-out dead-code fragments (sendmany SetLockTime/nLockTime, the
CCtx CC_vinselect random-pick block and AddNormalinputsLocal remote-mypk
redirect, miner adaptive-PoW assignments).

Comments only — no compiled behavior changes; the tree builds clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/wallet/asyncrpcoperation_sendmany.cpp

@@ -325,14 +325,12 @@ bool AsyncRPCOperation_sendmany::main_impl() {
             CScript scriptPubKey;
             for (auto t : t_inputs_) {
                 scriptPubKey = GetScriptForDestination(std::get<4>(t));
-                //printf("Checking new script: %s\n", scriptPubKey.ToString().c_str());
                 uint256 txid = std::get<0>(t);
                 int vout = std::get<1>(t);
                 CAmount amount = std::get<2>(t);
                 builder_.AddTransparentInput(COutPoint(txid, vout), scriptPubKey, amount);
             }
             // for other chains, set locktime to spend time locked coinbases
-            //builder_.SetLockTime((uint32_t)chainActive.Tip()->GetMedianTimePast());
         } else {
             CMutableTransaction rawTx(tx_);
             for (SendManyInputUTXO & t : t_inputs_) {
@@ -342,7 +340,6 @@ bool AsyncRPCOperation_sendmany::main_impl() {
                 CTxIn in(COutPoint(txid, vout));
                 rawTx.vin.push_back(in);
             }
-            //rawTx.nLockTime = (uint32_t)chainActive.Tip()->GetMedianTimePast();
             tx_ = CTransaction(rawTx);
         }
     }
@@ -416,7 +413,6 @@ bool AsyncRPCOperation_sendmany::main_impl() {
         }
 
         // Fetch Sapling anchor and witnesses
-        //LogPrintf("%s: Gathering anchors and witnesses\n", __FUNCTION__);
         uint256 anchor;
         std::vector<boost::optional<SaplingWitness>> witnesses;
         {
@@ -625,7 +621,6 @@ bool AsyncRPCOperation_sendmany::find_utxos(bool fAcceptCoinbase=false) {
                 continue;
             }
 
-            //printf("%s\n", boost::apply_visitor(AddressVisitorString(), dest).c_str());
             if (!destinations.count(dest)) {
                 continue;
             }