NOTE: tentative deployment date April 30, 2019
== Background
Based on the results from our A/B test, we estimated the effect of sameAs to be a 1.4% increase (95% CI: 0.7-2.1) in average page views per day.
== Acceptance Criteria
[] Delete PageSplitTester and PageSplitTesterTest from Wikibase (this will move to Core in T209319)
[] Delete PageRandomLookup and PageRandomLookupTest
[] Delete related configuration variables from Wikibase
[] Rollout directly to 100% on projects that were not a part of the A/B test
The effect should be to both eliminate some cruft introduced to Wikibase for "sameAs" and to rollout to 100%. If this is too dicey, submit an initial mediawiki-config patch that removes the "control" bucket and then do this task.
== QA
1. Pick a [[ https://tools.wmflabs.org/versions/ | group 0 or 1 wiki ]] such as [[ https://commons.wikimedia.org | Commons ]].
1. Go to a random main namespace page on the wiki such as [[ https://commons.wikimedia.org/wiki/Charaxes_jasius | Charaxes jasius ]].
1. Examine the page source and search for `application/ld+json`. You should see something like:
```
<script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Charaxes jasius","url":"https:\/\/commons.wikimedia.org\/wiki\/Charaxes_jasius","sameAs":"http:\/\/www.wikidata.org\/entity\/Q1320946","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q1320946","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2005-10-14T21:53:21Z","dateModified":"2019-03-08T00:43:01Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/c\/cc\/Charaxes_jasius_MHNT_CUT_2013_3_12_male_Roquebrun_34_Dorsal.jpg","headline":"species of insect"}</script>
```
4. If you don't find the LD+JSON blob, purge the cache and check again.
1. Repeat the process 10 times.
== QA Results
| **AC** | **Status** | **Details** |
| 1 | ✅ | T209377#5183353 |