wp-includes/theme.php:2207Removes all visual editor stylesheets.
boolfunction remove_editor_styles() { if ( ! current_theme_supports( 'editor-style' ) ) { return false; } _remove_theme_support( 'editor-style' ); if ( is_admin() ) { $GLOBALS['editor_styles'] = array(); } return true;}Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/theme.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.