Removed the redundant uncaught-exception-handler setting, use with-handlers except for the mzscheme tests
Removed the redundant uncaught-exception-handler setting, use with-handlers except for the mzscheme tests

svn: r11755

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket