trace: delete unused _vdp_cap_dump_point
trace: delete unused _vdp_cap_dump_point

Nothing actually uses VdpPoint, so this tracing function was never called.  I
left the VdpPoint type in vdpau.h for now, just in case anyone actually uses it
themselves.

Signed-off-by: Aaron Plattner <7c39395e2e801146cdbd7fb4a41282e4f38db44e@nvidia.com>

Distrotech/libvdpau,mosterta/libvdpau,mosterta/libvdpau,Distrotech/libvdpau,Distrotech/libvdpau,mosterta/libvdpau