drm/amd/pm: Remove unused smu_mode2_reset_is_support

smu_mode2_reset_is_support() was added in 2020 by
commit 5c03e58 ("drm/amdgpu:add smu mode1/2 support for aldebaran")
but has remained unused.

See discussion at:
https://lore.kernel.org/all/DM4PR12MB5165D85BD85BC8FC8BF7A3B48E88A@DM4PR12MB5165.namprd12.prod.outlook.com/

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Dr. David Alan Gilbert

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -3432,19 +3432,6 @@ bool smu_mode1_reset_is_support(struct smu_context *smu)
 	return ret;
 }
 
-bool smu_mode2_reset_is_support(struct smu_context *smu)
-{
-	bool ret = false;
-
-	if (!smu->pm_enabled)
-		return false;
-
-	if (smu->ppt_funcs && smu->ppt_funcs->mode2_reset_is_support)
-		ret = smu->ppt_funcs->mode2_reset_is_support(smu);
-
-	return ret;
-}
-
 bool smu_link_reset_is_support(struct smu_context *smu)
 {
 	bool ret = false;

drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h

@@ -1621,7 +1621,6 @@ int smu_get_power_limit(void *handle,
 			enum pp_power_type pp_power_type);
 
 bool smu_mode1_reset_is_support(struct smu_context *smu);
-bool smu_mode2_reset_is_support(struct smu_context *smu);
 bool smu_link_reset_is_support(struct smu_context *smu);
 int smu_mode1_reset(struct smu_context *smu);
 int smu_link_reset(struct smu_context *smu);