The cron job for importing data will only work in eqiad, because the replica in codfw doesn't get read/write traffic (T308133#8788818).
Let's remove the codfw deployment of the linkrecommendation application cron job.
acceptance criteria:
- Remove the codfw deployment of the load-datasets cron job
- Update the Logstash filters for Add Link to stop hiding the "Read only error" messages, since those should no longer occur