Revert "drm/amd/powerplay: workaround issue that when uvd dpm disabled,"

This reverts commit <2ded8c7f04825bc5cde2624f6aa83f1ff62672c0>

As we enabled bypass mode for uvd on polaris10 when clockgating.
so no need to set uvd clock manually.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König<christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1106,10 +1106,6 @@ static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
 	if (fences == 0 && handles == 0) {
 		if (adev->pm.dpm_enabled) {
 			amdgpu_dpm_enable_uvd(adev, false);
-			/* just work around for uvd clock remain high even
-			 * when uvd dpm disabled on Polaris10 */
-			if (adev->asic_type == CHIP_POLARIS10)
-				amdgpu_asic_set_uvd_clocks(adev, 0, 0);
 		} else {
 			amdgpu_asic_set_uvd_clocks(adev, 0, 0);
 		}