Refactoring of priority exercise

[herdigiorgi]

• unnecessary state variable removed
• added spaces after commas
• refactored and simplified loop

[facundoolano]

Here's an idea to improve this exercise: instead of printing, the processing could consist in pushing a value (for example the priority atom vip/normal) to a list in the state of the loop process. Then you could add a call to the server that returns the current state.

Using this you could have a proper unit test instead of just checking the console output.