clean up home.js

[karliatto]

The variable loggedMessage is never used

var loggedMessage = 'You are logged'; 

It is located in Line 9 and Line 24 but is not anymore used in home.html.

https://github.com/Learn-by-doing/bitstarter/blob/master/controllers/home.js#L9

https://github.com/Learn-by-doing/bitstarter/blob/master/controllers/home.js#L24

[drurenia]

I've changed it even though I was not aware of this issue. The clean up will be merged as soon as the pull request #109 is accepted.