Remove dead code in app and XBRL loader

lib/server/repos/issuer-overlays.ts

@@ -11,7 +11,7 @@ import {
   type IssuerOverlayStats,
 } from "@/lib/server/db/schema";
 
-export type IssuerOverlayRevisionRecord = {
+type IssuerOverlayRevisionRecord = {
   id: number;
   ticker: string;
   revision_number: number;
@@ -22,7 +22,7 @@ export type IssuerOverlayRevisionRecord = {
   created_at: string;
 };
 
-export type IssuerOverlayRecord = {
+type IssuerOverlayRecord = {
   ticker: string;
   status: "empty" | "active" | "error";
   active_revision_id: number | null;