It follows the CMake wiki
http://www.cmake.org/Wiki/CMake_FAQ#Can_I_do_.22make_uninstall.22_with_CMake.3F
and it should work if one
compiles from the build directory (building all kicad).
You can use it running the following commands from the kicad source
tree root:
mkdir build
cd build
cmake ../
make
(using root) make install
(using root) make uninstall