TST: remove fmt.test_to_string_force_unicode
TST: remove fmt.test_to_string_force_unicode

I think this is the wrong behaviour, and it breaks some
future unicode fixes. the constructor should  should complain
that no encoding was specified when the input is not ascii.

toobaz/pandas,TomAugspurger/pandas,pandas-dev/pandas,winklerand/pandas,winklerand/pandas,harisbal/pandas,harisbal/pandas,cbertinato/pandas,datapythonista/pandas,jreback/pandas,linebp/pandas,louispotok/pandas,cbertinato/pandas,linebp/pandas,MJuddBooth/pandas,TomAugspurger/pandas,zfrenchee/pandas,louispotok/pandas,harisbal/pandas,jorisvandenbossche/pandas,rs2/pandas,gfyoung/pandas,nmartensen/pandas,toobaz/pandas,TomAugspurger/pandas,jmmease/pandas,nmartensen/pandas,dsm054/pandas,gfyoung/pandas,dsm054/pandas,jreback/pandas,gfyoung/pandas,rs2/pandas,GuessWhoSamFoo/pandas,Winand/pandas,toobaz/pandas,DGrady/pandas,jmmease/pandas,gfyoung/pandas,winklerand/pandas,louispotok/pandas,linebp/pandas,dsm054/pandas,datapythonista/pandas,pandas-dev/pandas,MJuddBooth/pandas,cython-testbed/pandas,louispotok/pandas,pandas-dev/pandas,GuessWhoSamFoo/pandas,Winand/pandas,winklerand/pandas,nmartensen/pandas,DGrady/pandas,kdebrab/pandas,harisbal/pandas,kdebrab/pandas,jmmease/pandas,jreback/pandas,GuessWhoSamFoo/pandas,DGrady/pandas,pratapvardhan/pandas,amolkahat/pandas,MJuddBooth/pandas,Winand/pandas,amolkahat/pandas,linebp/pandas,zfrenchee/pandas,pratapvardhan/pandas,harisbal/pandas,jmmease/pandas,amolkahat/pandas,kdebrab/pandas,winklerand/pandas,cython-testbed/pandas,GuessWhoSamFoo/pandas,zfrenchee/pandas,TomAugspurger/pandas,zfrenchee/pandas,pratapvardhan/pandas,zfrenchee/pandas,pratapvardhan/pandas,Winand/pandas,nmartensen/pandas,Winand/pandas,datapythonista/pandas,toobaz/pandas,GuessWhoSamFoo/pandas,jorisvandenbossche/pandas,cython-testbed/pandas,cython-testbed/pandas,winklerand/pandas,amolkahat/pandas,DGrady/pandas,pandas-dev/pandas,cbertinato/pandas,jmmease/pandas,rs2/pandas,cbertinato/pandas,MJuddBooth/pandas,louispotok/pandas,datapythonista/pandas,jorisvandenbossche/pandas,toobaz/pandas,DGrady/pandas,linebp/pandas,jmmease/pandas,amolkahat/pandas,dsm054/pandas,dsm054/pandas,jorisvandenbossche/pandas,jreback/pandas,rs2/pandas,nmartensen/pandas,cbertinato/pandas,MJuddBooth/pandas,jreback/pandas,Winand/pandas,kdebrab/pandas,linebp/pandas,kdebrab/pandas,pratapvardhan/pandas,DGrady/pandas,cython-testbed/pandas,nmartensen/pandas,gfyoung/pandas