Removed lingering unused ACS and ZeroMQ code

cmake/Findzeromq.cmake

cta.spec.in

mediachanger/AcsDismountTape.proto

mediachanger/AcsForceDismountTape.proto

mediachanger/AcsLibrarySlot.cpp

mediachanger/AcsLibrarySlot.hpp

mediachanger/AcsMountTapeReadOnly.proto

mediachanger/AcsMountTapeReadWrite.proto

mediachanger/AcsProxy.cpp

mediachanger/AcsProxy.hpp

mediachanger/CMakeLists.txt

mediachanger/DismountCmdLineTest.cpp

mediachanger/DismountCmdMain.cpp

mediachanger/Exception.proto

mediachanger/Frame.cpp

mediachanger/Frame.hpp

mediachanger/LibrarySlot.cpp

mediachanger/LibrarySlotParser.cpp

mediachanger/LibrarySlotParser.hpp

mediachanger/LibrarySlotParserTest.cpp