drm/amdgpu: retire ip init code specific for A0 rev

For aqua_vanjaram, A0 HW is retired so remove the code
specific for it in gfx ip init.

Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: amd-morriszhang

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -349,18 +349,7 @@ static void gfx_v9_4_3_init_golden_registers(struct amdgpu_device *adev)
 
 		WREG32_SOC15(GC, dev_inst, regGB_ADDR_CONFIG,
 			     GOLDEN_GB_ADDR_CONFIG);
-		if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0)) {
-			WREG32_FIELD15_PREREG(GC, dev_inst, TCP_UTCL1_CNTL2, SPARE, 0x1);
-		} else {
-			/* Golden settings applied by driver for ASIC with rev_id 0 */
-			if (adev->rev_id == 0) {
-				WREG32_FIELD15_PREREG(GC, dev_inst, TCP_UTCL1_CNTL1,
-						      REDUCE_FIFO_DEPTH_BY_2, 2);
-			} else {
-				WREG32_FIELD15_PREREG(GC, dev_inst, TCP_UTCL1_CNTL2,
-						      SPARE, 0x1);
-			}
-		}
+		WREG32_FIELD15_PREREG(GC, dev_inst, TCP_UTCL1_CNTL2, SPARE, 0x1);
 	}
 }