Delete cffi bits

.gitmodules

cffi_build.py.in

cl_gl_types.h

cl_types.h

src/c_wrapper/bitlog.cpp

src/c_wrapper/buffer.cpp

src/c_wrapper/buffer.h

src/c_wrapper/clhelper.h

src/c_wrapper/clinfo_ext.h

src/c_wrapper/clobj.h

src/c_wrapper/command_queue.cpp

src/c_wrapper/command_queue.h

src/c_wrapper/context.cpp

src/c_wrapper/context.h

src/c_wrapper/debug.cpp

src/c_wrapper/debug.h

src/c_wrapper/device.cpp

src/c_wrapper/device.h

src/c_wrapper/error.h

src/c_wrapper/event.cpp