The `FileBlame` function looks strange, it has `revision` as argument
but doesn't use it.
Since the function never be used, I think we could just remove it.
If anyone thinks it should be kept, please help fix `revision`.
Co-authored-by: Giteabot <teabot@gitea.io>
This module is merged from https://github.com/go-gitea/git which is a Go module to access Git through shell commands. Now it's a part of gitea's main repository for easier pull request.