drm/amdgpu: Remove nbiov7.9 replay count reporting

Direct pcie replay count reporting is not available on nbio v7.9.
Reporting is done through firmware.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Mangesh Gadre <Mangesh.Gadre@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Fixes: 50709d18 ("drm/amdgpu: Add pci replay count to nbio v7.9")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>