Revert "drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix"

This reverts commit e5d59cfa.

This is no longer needed since we no longer suspend SDMA during
S0ix.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

@@ -809,12 +809,6 @@ static int sdma_v5_2_start(struct amdgpu_device *adev)
 			msleep(1000);
 	}
 
-	/* TODO: check whether can submit a doorbell request to raise
-	 * a doorbell fence to exit gfxoff.
-	 */
-	if (adev->in_s0ix)
-		amdgpu_gfx_off_ctrl(adev, false);
-
 	sdma_v5_2_soft_reset(adev);
 	/* unhalt the MEs */
 	sdma_v5_2_enable(adev, true);
@@ -823,8 +817,6 @@ static int sdma_v5_2_start(struct amdgpu_device *adev)
 
 	/* start the gfx rings and rlc compute queues */
 	r = sdma_v5_2_gfx_resume(adev);
-	if (adev->in_s0ix)
-		amdgpu_gfx_off_ctrl(adev, true);
 	if (r)
 		return r;
 	r = sdma_v5_2_rlc_resume(adev);