Remove ia migration assistance (#2630)

Author: NWylynko

.github/workflows/migration.yml

@@ -21,8 +21,6 @@
     "typedoc:extract-pages:with-src": "tsx scripts/extract-typedoc-pages.ts --with-src",
     "move-doc": "node scripts/move-doc.mjs",
     "delete-doc": "node scripts/delete-doc.mjs",
-    "migration:map-content": "tsx scripts/migration-assistant/map-content.ts",
-    "migration:map-content:dev": "tsx watch scripts/migration-assistant/map-content.ts",
     "migrate-sdk-scoping": "tsx scripts/migrate-sdk-scoping.ts",
     "migrate-api-reference-links": "tsx scripts/migrate-api-reference-links.ts"
   },