Remove incomplete Microsoft Sideshow device demo.

Demos/Device/Incomplete/Sideshow/Config/LUFAConfig.h

Demos/Device/Incomplete/Sideshow/Descriptors.c

Demos/Device/Incomplete/Sideshow/Descriptors.h

Demos/Device/Incomplete/Sideshow/Lib/SideshowApplications.c

Demos/Device/Incomplete/Sideshow/Lib/SideshowApplications.h

Demos/Device/Incomplete/Sideshow/Lib/SideshowCommands.c

Demos/Device/Incomplete/Sideshow/Lib/SideshowCommands.h

Demos/Device/Incomplete/Sideshow/Lib/SideshowCommon.c

Demos/Device/Incomplete/Sideshow/Lib/SideshowCommon.h

Demos/Device/Incomplete/Sideshow/Lib/SideshowContent.c

Demos/Device/Incomplete/Sideshow/Lib/SideshowContent.h

Demos/Device/Incomplete/Sideshow/Sideshow.c

Demos/Device/Incomplete/Sideshow/Sideshow.h

Demos/Device/Incomplete/Sideshow/makefile

LUFA/DoxygenPages/LUFAPoweredProjects.txt