Meteor.startup(function() {
    // create admin users
    if (Meteor.users.find({username: "admin"}).count() === 0) {
        Accounts.createUser({
            username: "admin",
            email: "admin@example.com",
            password: "reallysecret",
            profile: { admin: true }
        });
    }

    var users = [
        {username: 'Kimmo Ahokas', email: 'kimmo.ahokas@aalto.fi', password: 'salakala', profile: {admin: true}},
        {username: 'Toivo Testaaja', email: 'testaaja@example.com', password: 'hyvinsalainen', profile: {admin: false}},
    ];
    users.forEach(function(user) {
        var result = Meteor.users.findOne({username: user.username});
        if (!result) {
            Accounts.createUser(user);
        }
    });
});

@@ -51,267 +51,8 @@
 ers%0A
-    if (Meteor.users.find(%7Busername: %22admin%22%7D).count() === 0) %7B%0A        Accounts.createUser(%7B%0A            username: %22admin%22,%0A            email: %22admin@example.com%22,%0A            password: %22reallysecret%22,%0A            profile: %7B admin: true %7D%0A        %7D);%0A    %7D%0A%0A
     

Remove unnecessary part of the init code.