Merge bitcoin/bitcoin#29648: Remove libbitcoinconsensus

80f8b92f4f remove libbitcoinconsensus (fanquake)

Pull request description:

  This was deprecated in `v27.0`, for removal in `v28.0`. See discussion in PR #29189.

ACKs for top commit:
  theuni:
    Concept ACK and light review ACK 80f8b92f4f. My only hesitation here is that (afaics?) there's now nothing keeping undesired features like threading or globals from working their way into the interpreter in future commits.
  m3dwards:
    Concept ACK 80f8b92f4f
  TheCharlatan:
    ACK 80f8b92f4f
  hebasto:
    ACK 80f8b92f4f, I have reviewed the code and it looks OK.

Tree-SHA512: 17a62118aeb088f2695c892bb32794dfea3061e3cb7d9e8e9f1c06c3ff6f63a7587fa532e37edbb91fbc5a19b12c9a0f8e05fa9e8864aa07f92665375d847e80

src/bench/verify_script.cpp

@@ -2,15 +2,8 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#if defined(HAVE_CONFIG_H)
-#include <config/bitcoin-config.h>
-#endif
-
 #include <bench/bench.h>
 #include <key.h>
-#if defined(HAVE_CONSENSUS_LIB)
-#include <script/bitcoinconsensus.h>
-#endif
 #include <script/script.h>
 #include <script/interpreter.h>
 #include <streams.h>
@@ -63,17 +56,6 @@ static void VerifyScriptBench(benchmark::Bench& bench)
             &err);
         assert(err == SCRIPT_ERR_OK);
         assert(success);
-
-#if defined(HAVE_CONSENSUS_LIB)
-        DataStream stream;
-        stream << TX_WITH_WITNESS(txSpend);
-        int csuccess = bitcoinconsensus_verify_script_with_amount(
-            txCredit.vout[0].scriptPubKey.data(),
-            txCredit.vout[0].scriptPubKey.size(),
-            txCredit.vout[0].nValue,
-            (const unsigned char*)stream.data(), stream.size(), 0, flags, nullptr);
-        assert(csuccess == 1);
-#endif
     });
     ECC_Stop();
 }