Undefining some StringIO methods which are JRuby-specific
Undefining some StringIO methods which are JRuby-specific

defunkt/fakefs,dekz/fakefs,vhl/fakefs,onehub/fakefs,bquorning/fakefs,deployable/fakefs,marxarelli/fakefs,1234-/fakefs,pivotal-cf-experimental/fakefs,fakefs/fakefs,bf4/fakefs,eventualbuddha/fakefs,anthonyryan1/fakefs