Bug#1053673: RM: libwnck -- RoQA; leaf library; depends on gtk2

[Bastian Germann]

Source: libwnck
Severity: serious
Version: 2.30.7-6

Please remove libwnck. It does not have any reverse dependencies anymore and 
depends on the obsolete gtk2.
I am going to file a RM bug when this is autoremoved from testing.