Clean up many small dependencies (part 3) (#8425)

Follow-up to #8353

Release Notes:
- N/A

crates/fs/Cargo.toml

@@ -23,7 +23,6 @@ tempfile.workspace = true
 lazy_static.workspace = true
 parking_lot.workspace = true
 smol.workspace = true
-regex.workspace = true
 git2.workspace = true
 serde.workspace = true
 serde_derive.workspace = true