drm/amd/powerplay: remove defined but not used variables

Fix the following gcc warning:

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega10_powertune.c:710:46:
warning: ‘PSMGCEDCThresholdConfig_vega10’ defined but not used
[-Wunused-const-variable=]
 static const struct vega10_didt_config_reg
PSMGCEDCThresholdConfig_vega10[] =
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega10_powertune.c:654:46:
warning: ‘PSMSEEDCThresholdConfig_Vega10’ defined but not used
[-Wunused-const-variable=]
 static const struct vega10_didt_config_reg
PSMSEEDCThresholdConfig_Vega10[] =
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_powertune.c

@@ -651,18 +651,6 @@ static const struct vega10_didt_config_reg   PSMSEEDCStallDelayConfig_Vega10[] =
 	{   0xFFFFFFFF  }  /* End of list */
 };
 
-static const struct vega10_didt_config_reg   PSMSEEDCThresholdConfig_Vega10[] =
-{
-/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- *      Offset                             Mask                                                 Shift                                                  Value
- * ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- */
-	/* SQ EDC THRESHOLD */
-	{   ixDIDT_SQ_EDC_THRESHOLD,           DIDT_SQ_EDC_THRESHOLD__EDC_THRESHOLD_MASK,           DIDT_SQ_EDC_THRESHOLD__EDC_THRESHOLD__SHIFT,            0x0000 },
-
-	{   0xFFFFFFFF  }  /* End of list */
-};
-
 static const struct vega10_didt_config_reg   PSMSEEDCCtrlResetConfig_Vega10[] =
 {
 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
@@ -707,17 +695,6 @@ static const struct vega10_didt_config_reg   PSMSEEDCCtrlConfig_Vega10[] =
 	{   0xFFFFFFFF  }  /* End of list */
 };
 
-static const struct vega10_didt_config_reg   PSMGCEDCThresholdConfig_vega10[] =
-{
-/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- *      Offset                             Mask                                                 Shift                                                  Value
- * ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- */
-	{   mmGC_EDC_THRESHOLD,                GC_EDC_THRESHOLD__EDC_THRESHOLD_MASK,                GC_EDC_THRESHOLD__EDC_THRESHOLD__SHIFT,                 0x0000000 },
-
-	{   0xFFFFFFFF  }  /* End of list */
-};
-
 static const struct vega10_didt_config_reg   PSMGCEDCDroopCtrlConfig_vega10[] =
 {
 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------