message: fuzz: Remove needless guard
diff: #include <primitives/block.h>
  #include <signet.h>
  #include <streams.h>
  -#include <test/fuzz/fuzz.h>
  #include <test/fuzz/FuzzedDataProvider.h>
  +#include <test/fuzz/fuzz.h>
  #include <test/fuzz/util.h>
  #include <cstdint>
  @@ -28,7 +28,5 @@ void test_one_input(const std::vector<uint8_t>& buffer)
  return;
  }
  (void)CheckSignetBlockSolution(*block, Params().GetConsensus());
  - if (GetWitnessCommitmentIndex(*block) != NO_WITNESS_COMMITMENT) {
  (void)SignetTxs::Create(*block, ConsumeScript(fuzzed_data_provider));
  }
  -}
  