Function remove_note_for 

pub fn remove_note_for(
    git_dir: &Path,
    format: ObjectFormat,
    store: &FileRefStore,
    notes_ref: &NotesRef,
    annotated: &ObjectId,
    message: &str,
    identity: &NotesCommitIdentity,
    ref_expected: Option<RefTarget>,
) -> Result<RemoveNoteOutcome>

Remove the note for a single annotated object, if present.