Removed all VRPN files

src/vrpn/vrpn_inertiamouse.h

src/vrpn/vrpn_nikon_controls.C

src/vrpn/vrpn_nikon_controls.h

src/vrpn/vrpn_raw_sgibox.C

src/vrpn/vrpn_raw_sgibox.h

src/vrpn/vrpn_sgibox.C

src/vrpn/vrpn_sgibox.h

src/vrpn/vrpndll.dsp

src/vrpn/vrpndll.vcproj