epdfview: move to nonworking

* images are not displayed anymore
* there will be no further development / upstream is gone [1]

[1] https://bugzilla.redhat.com/show_bug.cgi?id=906121



Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>