drm/amdgpu: Remove SMU powergate message call for SDMA

SDMA v4.4.2 doesn't need explicit power gating control through PMFW
Signed-off-by: Asad kamal <asad.kamal@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c

@@ -1398,10 +1398,6 @@ static int sdma_v4_4_2_hw_init(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	uint32_t inst_mask;
 
-	/* TODO: Check if this is needed */
-	if (adev->flags & AMD_IS_APU)
-		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_SDMA, false);
-
 	inst_mask = GENMASK(adev->sdma.num_instances - 1, 0);
 	if (!amdgpu_sriov_vf(adev))
 		sdma_v4_4_2_inst_init_golden_registers(adev, inst_mask);