Revert "drm/amd/pm: smu v13_0_6 supports ecc info by default"

This reverts commit 6fe08f56.
We use debug mode flag instead of this interface.

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>