fix(lint): PathBuf is unused once the merge takes #22's shared disc_root

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

crates/sylpheed-formats/tests/movie_manifest_disc.rs

@@ -1,7 +1,7 @@
 //! Real-disc test for the movie manifest → voice binding. Skipped without
 //! `SYLPHEED_DISC`.
 
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 use sylpheed_formats::movie_manifest;
 use sylpheed_formats::slb::VoiceLang;

crates/sylpheed-formats/tests/slb_disc.rs

@@ -3,7 +3,7 @@
 
 use std::fs::File;
 use std::io::{Read, Seek, SeekFrom};
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 use sylpheed_formats::hash::name_hash;
 use sylpheed_formats::slb::{self, VoiceLang};