History of unlink 2 changes

In crates/hub/src/signin.rs, lines 327–334 on 3571c519ada6813623c872d81fafd38b4c2450e395a10bc5e53c7b6195b2ce03. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 327,334:crates/hub/src/signin.rs.