The scripts/tier2/state/ and scripts/tier2/failures/ entries were
added when those were the default locations. After Tier 2's
project-relative relocation (commit 923d360d), the actual defaults
are tests/artifacts/tier2_state/ and tests/artifacts/tier2_failures/,
which are already covered by the existing tests/artifacts/ entry.
The scripts/tier2/state/ and scripts/tier2/failures/ dirs are no
longer created by anything, so the gitignore entries were dead
config.
Refs: conductor/tracks/tier2_no_appdata_20260618 (post-merge followup)
Track-isolated Tier 2 scratch dirs (per-track state.json + failure
reports). Excluding from git prevents accidental commits of run state
that would otherwise be tracked alongside the source.
Refs: conductor/tracks/tier2_no_appdata_20260618
ed