Remove language indexer.
It has always been unreliable, and its tests are broken since Pygments v2.4.0.
Migrated from D1455 (view on Phabricator)
Staging instance, all changes can be removed at any time
It has always been unreliable, and its tests are broken since Pygments v2.4.0.
Migrated from D1455 (view on Phabricator)