Problem

A second pass after the leftover-remnant ticket found dangling tiered-storage references that are not post-removal notes: a live @skip_for_hook("tiered") after the hook is gone, comments that still claim flush_tier runs, a Doxygen snippet pointing at deleted ex_storage_source.c, AGENTS.md still listing src/tiered, stale comments in tests/block/schema, and tooling (callgraph, RTS verifier URI prefix) that still treats the removed tree as live.

Change

Strip those dangling references. Do not touch parse stubs (tiered_storage= / tiered_object), upgrading.dox removal notes, address-cookie objectid / WT_TIERED_OBJECTID_NONE, import, WT_BTREE_PREFIX, or the err.c URI allow-list. Those are remaining behavior or intentional notes. Validate each hit: drop live or wrong claims; keep a historical parser only if it still has to read old logs.

Test

s_fast. Python tests touched by skip or comment changes (test_eviction08 at minimum). No new behavior tests unless a leftover skip was hiding a live path.