forceReload prevents ajax submission

...instead of weird hacky workarounds forcing refreshes later.

bookwyrm/views/shelf/shelf_actions.py

@@ -101,6 +101,4 @@ def unshelve(request, referer=None, book_id=False):
     )
     shelf_book.raise_not_deletable(request.user)
     shelf_book.delete()
-    if bool(referer):
-        return HttpResponse(headers={"forceReload": "true"})
     return redirect(request.headers.get("Referer", "/"))