Removed hand-written optimizations for Sized that are incompatible with its compiled version
Removed hand-written optimizations for Sized that are incompatible with its compiled version

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