History of unlink 2 changes

In crates/hub/src/signin.rs, lines 327–334 on 55673c650986366ebafeaa96f1a2174ad5136b26a3870f2a82087aca35dc4077. 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.