Pl open an issue in gitlab sharing the details of the device on which it was noticed. We had a similar issue raised on a Samsung s8 dreamlte. The person raising the issue marked it as confidential, so it might not be accessible to other users. This issue seems to be device specific and was closed for the s8. The developers had mentioned that these are proprietary files extracted from the original ROM just like other vendor specific files and is device specific and will not show up on other devices. All the same, you can raise an issue and share device details so that the developers can check if it can be removed from the OnePlus 7T