Removing Enrolments and User progresses creation from seed

[juliettehutton]

5 users:

{ first_name: "Ryan", last_name: "Smith", nickname: "ryansmith", email: "ryan@example.com", password: "password", coins: 0, streak: 0 }, { first_name: "Lola", last_name: "Smith", nickname: "lolasmith", email: "lola@example.com", password: "password", coins: 500, streak: 5 }, { first_name: "Simone", last_name: "Smith", nickname: "simonesmith", email: "simone@example.com", password: "password", coins: 350, streak: 2 }, { first_name: "Clark", last_name: "Smith", nickname: "clarksmith", email: "clark@example.com", password: "password", coins: 750, streak: 4 }, { first_name: "Youssef", last_name: "Smith", nickname: "youssefsmith", email: "youssef@example.com", password: "password", coins: 1000, streak: 20 }