Unmuting extra threads for clients

Client/clients.cpp

@@ -1036,20 +1036,16 @@ int main(int argc, char **argv)
     boost::thread t([&]{io_context.run();});
     boost::thread t2([&]{io_context.run();});
     boost::thread t3([&]{io_context.run();});
-    /*
     boost::thread t4([&]{io_context.run();});
     boost::thread t5([&]{io_context.run();});
     boost::thread t6([&]{io_context.run();});
-    */
     io_context.run();
     t.join();
     t2.join();
     t3.join();
-    /*
     t4.join();
     t5.join();
     t6.join();
-    */
 
     delete [] clients;
 }