message: walletdb: Remove unsed boost/thread
diff: #include <atomic>
  #include <string>
  -#include <boost/thread.hpp>
  -
  namespace DBKeys {
  const std::string ACENTRY{"acentry"};
  const std::string ACTIVEEXTERNALSPK{"activeexternalspk"};
  @@ -745,11 +743,7 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
  pwallet->WalletLogPrintf("%s\n", strErr);
  }
  pcursor->close();
  - }
  - catch (const boost::thread_interrupted&) {
  - throw;
  - }
  - catch (...) {
  + } catch (...) {
  result = DBErrors::CORRUPT;
  }
  