CLearningGroupLesson::delete

static function delete($lessonId, $groupId)
{
	global $DB;

	$rc = $DB->Query(
		"DELETE FROM b_learn_groups_lesson 
		WHERE LESSON_ID = " . (int) $lessonId . "
			AND LEARNING_GROUP_ID = " . (int) $groupId,
		$bIgnoreErrors = true
	);

	return ($rc !== false);
}