Remove call to getTree
Remove call to getTree

We did this call to get the /mnt/user tree, to display it in the
settings screen.

This is no longer required, because we'll call getTree for each
disk that will be checked as source.

Related to #33

jbrodriguez/unbalance,jbrodriguez/unbalance,jbrodriguez/unbalance,jbrodriguez/unbalance