test(rest): leave the slot-census test as main has it

The history line added there brought the file into check:test-source-alias's
source reach; the explanation for the `readQuery` spelling lives at the
event's declaration in data-action-routes.ts instead.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L9qibwj6uu1L1hVh8hXHro

Author: claude

packages/rest/src/rest-server-canonical-query-ast.test.ts

@@ -453,9 +453,6 @@ describe('[#16638] §1 CONTROLS on the census instrument itself', () => {
         // [#27627] The sum unchanged by the app metadata bundle (no slot).
         // [#28470] The sum 5 → 6: the record page's stream reads (`readStream`).
         // [#30675] The sum unchanged by the record-currency code backfill (no slot).
-        // [#30955] The sum unchanged by the export door's audit event: it hands
-        // the plugin-audit writer the query as read under `readQuery`, which is
-        // not a QueryAST slot and reaches no engine.
         expect(Object.keys(REGISTRAR_QUERY_SLOT_FLOORS).sort()).toEqual([...REST_SERVER_REGISTRAR_FILES].sort());
         expect(CENSUS.filter(({ file }) => REGISTRAR_SOURCES.has(file)).map(({ file }) => file))
             .toEqual([...REST_SERVER_REGISTRAR_FILES]);