Exclude objects from full package compilation

hello everyone

I am building a full package for my new environment but i have some objects wich are old and not needed on my new environment

so i would like to know if there is any table o some other way to exclude this objects from the full compilation so it no longer gives me

CER ERROR which by the way i don´t know what it means if some one know please let me know

So please let me know if there is a way to exclude bsfn nerds and tables from the buil since some tables where created for my old development and are no longer needed on my new development