I18N: Revert [49236] for now to investigate alternative implementations.

See #39210, #51678, #26511.

git-svn-id: https://develop.svn.wordpress.org/trunk@49566 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/theme/themeDir.php

@@ -162,7 +162,6 @@ class Tests_Theme_ThemeDir extends WP_UnitTestCase {
 			'Page Template Theme',                // Theme with page templates for other test code.
 			'Theme with Spaces in the Directory',
 			'Internationalized Theme',
-			'Custom Internationalized Theme',
 			'camelCase',
 			'REST Theme',
 		);