drm/amd/powerplay: remove duplicate macro of smu_get_uclk_dpm_states

remove duplicate macro of smu_get_uclk_dpm_states

fix commit:
drm/amd/powerplay: add the interface for getting ultimate frequency v3

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>