See T180161
The ep_articles_course_id index should be dropped from all wikis running EducationProgram
```lang=php
'wmgUseEducationProgram' => [
'default' => false,
'arwiki' => true, // T59729
'cawiki' => true, // T73381
'cswiki' => true, // T56223
'dewikiversity' => true,
'elwiki' => true, // T58771
'enwiki' => true,
'enwikinews' => true, // T55984
'eswiki' => true, // T56826
'fawiki' => true,
'frwikisource' => true, // T105853
'hewiki' => true, // T50848
'hewiktionary' => true, // T89393
'itwikiversity' => true, // T162692
'lvwiki' => true, // T89898
'mkwiki' => true, // T50262
'nlwiki' => true, // T52574
'ptwiki' => true, // T54870
'ruwiki' => true, // T89588
'srwiki' => true, // T110619
'svwiki' => true, // T51009
'test2wiki' => true,
'ukwiki' => true, // T66143
],
``