sooperlooper is marked for autoremoval from testing

[Debian testing autoremoval watch]

sooperlooper 1.7.3~dfsg0-2 is marked for autoremoval from testing on 2016-05-01

It is affected by these RC bugs:
819790: sooperlooper: FTBFS: error: no match for call to '(std::_Bind<sigc::bound_mem_functor3<void, SooperLooper::MidiBridge, int, int, SooperLooper::Engine*>(SooperLooper::Engine*)>)