CLN: remove if conditions that are almost never True
CLN: remove if conditions that are almost never True

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