scripted-diff: Replace boost::bind with std::bind

-BEGIN VERIFY SCRIPT-
for j in $(seq 1 5)
do
    sed -i "s/ _${j}/ std::placeholders::_${j}/g" $(git grep --name-only " _${j}" -- '*.cpp' '*.h')
done
sed -i "s/boost::bind/std::bind/g" $(git grep --name-only boost::bind -- '*.cpp' '*.h')
sed -i "s/boost::ref/std::ref/g" $(git grep --name-only boost::ref -- '*.cpp' '*.h')
sed -i '/boost\/bind/d' $(git grep --name-only boost/bind)
-END VERIFY SCRIPT-

src/test/test_bitcoin.cpp

@@ -92,7 +92,7 @@ TestingSetup::TestingSetup(const std::string& chainName) : BasicTestingSetup(cha
 
         // We have to run a scheduler thread to prevent ActivateBestChain
         // from blocking due to queue overrun.
-        threadGroup.create_thread(boost::bind(&CScheduler::serviceQueue, &scheduler));
+        threadGroup.create_thread(std::bind(&CScheduler::serviceQueue, &scheduler));
         GetMainSignals().RegisterBackgroundSignalScheduler(scheduler);
 
         mempool.setSanityCheck(1.0);