CI: drop the one-shot exports_map flush; the dist branch's exports are clean

Reverts 67788c7 now that dist `8189c18` no longer lists `./cf-access` /
`./schema.sql`, so npm-dist's missing-export check fails loudly again.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DyJyzSYpRxJuL6x6NyjpG3

Author: ryan-williams

.github/workflows/ci.yml

@@ -49,10 +49,6 @@ jobs:
           # file list, which silently drops any migration added after it;
           # `verify-dist` fails the publish if the shipped set diverges from source.
           extra_files: migrations,README.md
-          # One publish only: the dist branch's package.json still carries
-          # `./cf-access` and `./schema.sql` (npm-dist deep-merges `exports`), and
-          # a non-empty exports_map makes it drop entries whose files are gone.
-          exports_map: '{}'
 
   # Install the published branch exactly as a consumer would, and use it.
   # The `test` job runs against `src/`, which says nothing about whether the