drm/amd/pm/smu13: Remove unused smu_v13_0_init_display_count

smu_v13_0_init_display_count() was added in 2020 by
commit c05d1c4 ("drm/amd/swsmu: add aldebaran smu13 ip support (v3)")
but is unused.

See discussion on:
https://lore.kernel.org/all/DM4PR12MB5165D85BD85BC8FC8BF7A3B48E88A@DM4PR12MB5165.namprd12.prod.outlook.com/
that it really isn't neede.

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/inc/smu_v13_0.h

@@ -163,8 +163,6 @@ int smu_v13_0_notify_memory_pool_location(struct smu_context *smu);
 int smu_v13_0_system_features_control(struct smu_context *smu,
 				      bool en);
 
-int smu_v13_0_init_display_count(struct smu_context *smu, uint32_t count);
-
 int smu_v13_0_set_allowed_mask(struct smu_context *smu);
 
 int smu_v13_0_notify_display_change(struct smu_context *smu);

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -749,18 +749,6 @@ int smu_v13_0_set_tool_table_location(struct smu_context *smu)
 	return ret;
 }
 
-int smu_v13_0_init_display_count(struct smu_context *smu, uint32_t count)
-{
-	int ret = 0;
-
-	if (!smu->pm_enabled)
-		return ret;
-
-	ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_NumOfDisplays, count, NULL);
-
-	return ret;
-}
-
 int smu_v13_0_set_allowed_mask(struct smu_context *smu)
 {
 	struct smu_feature *feature = &smu->smu_feature;