drm/amdgpu: Remove redundant code in gfx_v8_0.c

the CG related registers have been programed in golden setting
PG register default value is 0.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hang Zhou <hang.zhou@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -4208,31 +4208,11 @@ static int gfx_v8_0_rlc_load_microcode(struct amdgpu_device *adev)
 static int gfx_v8_0_rlc_resume(struct amdgpu_device *adev)
 {
 	int r;
-	u32 tmp;
 
 	gfx_v8_0_rlc_stop(adev);
-
-	/* disable CG */
-	tmp = RREG32(mmRLC_CGCG_CGLS_CTRL);
-	tmp &= ~(RLC_CGCG_CGLS_CTRL__CGCG_EN_MASK |
-		 RLC_CGCG_CGLS_CTRL__CGLS_EN_MASK);
-	WREG32(mmRLC_CGCG_CGLS_CTRL, tmp);
-	if (adev->asic_type == CHIP_POLARIS11 ||
-	    adev->asic_type == CHIP_POLARIS10 ||
-	    adev->asic_type == CHIP_POLARIS12 ||
-	    adev->asic_type == CHIP_VEGAM) {
-		tmp = RREG32(mmRLC_CGCG_CGLS_CTRL_3D);
-		tmp &= ~0x3;
-		WREG32(mmRLC_CGCG_CGLS_CTRL_3D, tmp);
-	}
-
-	/* disable PG */
-	WREG32(mmRLC_PG_CNTL, 0);
-
 	gfx_v8_0_rlc_reset(adev);
 	gfx_v8_0_init_pg(adev);
 
-
 	if (adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
 		/* legacy rlc firmware loading */
 		r = gfx_v8_0_rlc_load_microcode(adev);