drm/amdgpu: clean up some leftovers from bring up

Some old registers leftover from pre-silicon.  No longer
relevant on real hardware.  Remove.
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_7_2_0_offset.h

@@ -20753,8 +20753,6 @@
 
 // addressBlock: nbio_nbif0_gdc_GDCDEC
 // base address: 0xd0000000
-#define regGDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL                                                          0x2ffc0eda
-#define regGDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL_BASE_IDX                                                 5
 #define regGDC1_NGDC_SDP_PORT_CTRL                                                                      0x2ffc0ee2
 #define regGDC1_NGDC_SDP_PORT_CTRL_BASE_IDX                                                             5
 #define regGDC1_SHUB_REGS_IF_CTL                                                                        0x2ffc0ee3

drivers/gpu/drm/amd/include/asic_reg/nbio/nbio_7_2_0_sh_mask.h

-
 /*
  * Copyright (C) 2020  Advanced Micro Devices, Inc.
  *
@@ -108541,17 +108540,6 @@
 
 
 // addressBlock: nbio_nbif0_gdc_GDCDEC
-//GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN0_FAST_WRITE_RESPONSE_EN__SHIFT                             0x0
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN1_FAST_WRITE_RESPONSE_EN__SHIFT                             0x1
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN2_FAST_WRITE_RESPONSE_EN__SHIFT                             0x2
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN3_FAST_WRITE_RESPONSE_EN__SHIFT                             0x3
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__FWR_NORMAL_ARB_MODE__SHIFT                                       0x10
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN0_FAST_WRITE_RESPONSE_EN_MASK                               0x00000001L
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN1_FAST_WRITE_RESPONSE_EN_MASK                               0x00000002L
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN2_FAST_WRITE_RESPONSE_EN_MASK                               0x00000004L
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__LOGAN3_FAST_WRITE_RESPONSE_EN_MASK                               0x00000008L
-#define GDC1_LOGAN_FAST_WRITE_RESPONSE_CNTL__FWR_NORMAL_ARB_MODE_MASK                                         0x00010000L
 //GDC1_NGDC_SDP_PORT_CTRL
 #define GDC1_NGDC_SDP_PORT_CTRL__SDP_DISCON_HYSTERESIS__SHIFT                                                 0x0
 #define GDC1_NGDC_SDP_PORT_CTRL__NGDC_OBFF_HW_URGENT_EARLY_WAKEUP_EN__SHIFT                                   0xf