Remove simulation time expiration check.
Related tasks
Context
The expiration check used to track simulation time was set before we had the warmup topic from where we receive the start and recording_complete messages.
Since the topic is in charge of telling cloudsim if a simulation is finished, we only need to check if the simulation has reached the maximum amount of valid time set by applications.
Change
This MR removes the need of checking the expiration of simulations by their simulation time. It will make all simulations run for the amount of time set by ValidFor unless a recording_complete message is received.
Other information
Additional documentation
Edited by Alejo Carballude