Replace 5 functions that used std::future::wait_for() (wall-clock time)
with poll_condition_with_timeout() (simulation time). This prevents
timeouts from expiring prematurely when running at high speed factors
under lockstep.
Affected functions:
- wait_until_altitude()
- wait_for_landed_state()
- wait_for_flight_mode()
- start_and_wait_for_mission_sequence()
- wait_until_speed_lower_than()
Also remove debug printf statements from start_checking_altitude().
Ramon Roche
8e71a96cf7