Removed libtinymail-queues and libtinymail-asyncworker

[Philip Van Hoof <spam pvanhoof be>]

I'm not planning to support libtinymail-queues nor libtinymail-
asyncworker in Tinymail's 1.0, so I removed both libraries for now from
the repository. We might reintroduce them in a future release, though.


-- 
Philip Van Hoof, freelance software developer
home: me at pvanhoof dot be 
gnome: pvanhoof at gnome dot org 
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