Claude review: fbdev: atyfb: Remove unused fb_list

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Status: Clean**

The patch removes two things:

1. The static variable declaration:
```c
-static struct fb_info *fb_list = NULL;
```

2. The assignment in `aty_init()`:
```c
-	fb_list = info;
```

Both removals are straightforward dead code elimination. The variable was only ever assigned to, never read from, which is exactly what the clang warning reports. No other references to `fb_list` exist in this file (the diff removes all of them), so there's no risk of breaking anything.

The commit message properly credits the kernel test robot report and includes the `Closes:` tag linking to the build warning.

**Reviewed-by worthy.** No concerns.

---
Generated by Claude Code Patch Reviewer