Remove now obsolete tests - utf-8 characters work fine under Python 3 and when using new escaping and serialization method.
Remove now obsolete tests - utf-8 characters work fine under Python 3
and when using new escaping and serialization method.

StackStorm/st2,Plexxi/st2,StackStorm/st2,Plexxi/st2,nzlosh/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2