drm/amd/powerplay: remove redundancy debug log in smu

remove redundacy debug log in smu.
eg:
[ 6897.969447] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6897.969448] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6897.969448] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6899.024114] amdgpu: [powerplay] Unsupported SMU message: 38
[ 6899.024151] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6899.024151] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6899.024152] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6900.078296] amdgpu: [powerplay] Unsupported SMU message: 38
[ 6900.078332] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6900.078332] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6900.078333] amdgpu: [powerplay] smu 11 clk dpm feature 1 is not enabled
[ 6901.133230] amdgpu: [powerplay] Unsupported SMU message: 38
Signed-off-by: NKevin Wang <kevin1.wang@amd.com>
Reviewed-by: NKenneth Feng <kenneth.feng@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/arcturus_ppt.c

@@ -181,10 +181,8 @@ static int arcturus_get_smu_msg_index(struct smu_context *smc, uint32_t index)
 		return -EINVAL;
 
 	mapping = arcturus_message_map[index];
-	if (!(mapping.valid_mapping)) {
-		pr_warn("Unsupported SMU message: %d\n", index);
+	if (!(mapping.valid_mapping))
 		return -EINVAL;
-	}
 
 	return mapping.map_to;
 }