KX_IPOActuator is not used since 2.4. This patch removes: - KX_IPOActuator.h/cpp; - Python doc; - Write of IPO actuator in write.c; - Allocation of IPOactuator in sca.c; - Conversion in KX_ConvertActuators.cpp; - Initialization of the python proxy in KX_PythonInitTypes.cpp; - Other minor remove in logic_windows.c and in KX_PythonInit.cpp. Reviewers: sybren, campbellbarton Reviewed By: campbellbarton Subscribers: moguri Differential Revision: https://developer.blender.org/D1603