[HELP] Note driver doesn't have g_note_info anymore

### Description

`tools/noteinfo.c` is a tool that seemingly lets you dump note data from a debugger, it refers to g_note_info data structure which doesn't exist anymore.

Is there an equivalent data structure, or should we delete this tool?

### Verification

- [x] I have verified before submitting the report.

Start with tools/noteinfo.c and trace its references to the missing g_note_info data structure. Determine whether an equivalent structure exists or whether the tool should be removed, then verify that the selected change leaves the tools directory consistent.

Written by the indexing model from the issue text.