wp-includes/capabilities.php:1125Removes a role, if it exists.
$rolestringfunction remove_role( $role ) { wp_roles()->remove_role( $role );}Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/capabilities.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.