Remove repl section from the morning curriculum

[tesk9]

Justifications:

• repl is not a day to day tool
• addition/subtraction/etc should be familiar to attendees at the level we're targeting

[michaelglass]

one of the ideas you had in slack was, "Dict are a big jump"

@danyx23 - did you finish your change from Dict to Tuple?

[danyx23]

@michaelglass thanks for reminding me, I had prepared it on the day of the course but forgot to send the PR