remove String.characters (JS) for #465
remove String.characters (JS) for #465

jvasileff/ceylon.language,lucaswerkmeister/ceylon.language,unratito/ceylon.language,ceylon/ceylon.language,lucaswerkmeister/ceylon.language,ceylon/ceylon.language,unratito/ceylon.language,jvasileff/ceylon.language