refactor: Drop boost::this_thread::interruption_point and boost::thread_interrupted in main thread

src/bitcoin-cli.cpp

@@ -492,9 +492,6 @@ static int CommandLineRPC(int argc, char *argv[])
             }
         } while (fWait);
     }
-    catch (const boost::thread_interrupted&) {
-        throw;
-    }
     catch (const std::exception& e) {
         strPrint = std::string("error: ") + e.what();
         nRet = EXIT_FAILURE;

src/bitcoin-tx.cpp

@@ -820,10 +820,6 @@ static int CommandLineRawTx(int argc, char* argv[])
 
         OutputTx(tx);
     }
-
-    catch (const boost::thread_interrupted&) {
-        throw;
-    }
     catch (const std::exception& e) {
         strPrint = std::string("error: ") + e.what();
         nRet = EXIT_FAILURE;

src/validation.cpp

@@ -3819,8 +3819,6 @@ bool CChainState::LoadBlockIndex(const Consensus::Params& consensus_params, CBlo
     if (!blocktree.LoadBlockIndexGuts(consensus_params, [this](const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return this->InsertBlockIndex(hash); }))
         return false;
 
-    boost::this_thread::interruption_point();
-
     // Calculate nChainWork
     std::vector<std::pair<int, CBlockIndex*> > vSortedByHeight;
     vSortedByHeight.reserve(mapBlockIndex.size());