[connman-qt] just remove the message here, it's not used.

bump version to 1.0.21
Merge pull request #57 from lpotter/master

[connman-qt] just remove the message here, it's not used.
[connman-qt] Add SavedServiceModel

SavedServiceModel is a model exporting the list of favorite services
for a nominated technology.  Saved services are reported even if they
are not currently detectable.