Play Framework

docs(deps): drop dangling PF-89 assessment path

framework/dependencies.yml pointed at
documentation/assessments/PF-89-junit-6-upgrade.md, which PF-90 deliberately
purged in 358e7e2ba as a one-off migration doc — the pointer was simply left
behind. The comment's substance (the audited conclusion that the play.test
API surface is unchanged from 5.13) was already stated inline, so only the
dead path goes; the audit itself stays recoverable from 596e64a3f, now cited
by SHA rather than by a path that no longer resolves.

Verified: both cited commits resolve, the doc is readable at 596e64a3f, and
`ant resolve` re-parses dependencies.yml clean (135 artifacts, 0 stray).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>