Remove the custom availability_zones.py patch
Remove the custom availability_zones.py patch

We are migrating to havana release.  No longer need to patch
this file.

channus/ursula,mjbrewer/ursula,twaldrop/ursula,dlundquist/ursula,mjbrewer/ursula,twaldrop/ursula,pbannister/ursula,masteinhauser/ursula,panxia6679/ursula,allomov/ursula,narengan/ursula,rongzhus/ursula,sivakom/ursula,zrs233/ursula,pgraziano/ursula,kennjason/ursula,wupeiran/ursula,greghaynes/ursula,channus/ursula,channus/ursula,kennjason/ursula,ryshah/ursula,mjbrewer/ursula,davidcusatis/ursula,pbannister/ursula,edtubillara/ursula,masteinhauser/ursula,ryshah/ursula,masteinhauser/ursula,persistent-ursula/ursula,persistent-ursula/ursula,fancyhe/ursula,channus/ursula,rongzhus/ursula,ryshah/ursula,j2sol/ursula,wupeiran/ursula,wupeiran/ursula,lihkin213/ursula,nirajdp76/ursula,EricCrosson/ursula,dlundquist/ursula,ddaskal/ursula,blueboxjesse/ursula,jwaibel/ursula,jwaibel/ursula,blueboxjesse/ursula,lihkin213/ursula,paulczar/ursula,wupeiran/ursula,ddaskal/ursula,masteinhauser/ursula,MaheshIBM/ursula,persistent-ursula/ursula,persistent-ursula/ursula,MaheshIBM/ursula,narengan/ursula,rongzhus/ursula,fancyhe/ursula,nirajdp76/ursula,sivakom/ursula,andrewrothstein/ursula,panxia6679/ursula,paulczar/ursula,knandya/ursula,andrewrothstein/ursula,EricCrosson/ursula,jwaibel/ursula,twaldrop/ursula,blueboxjesse/ursula,ddaskal/ursula,lihkin213/ursula,zrs233/ursula,j2sol/ursula,j2sol/ursula,retr0h/ursula,blueboxjesse/ursula,aldevigi/ursula,knandya/ursula,pgraziano/ursula,dlundquist/ursula,edtubillara/ursula,blueboxgroup/ursula,nirajdp76/ursula,fancyhe/ursula,allomov/ursula,nirajdp76/ursula,retr0h/ursula,paulczar/ursula,fancyhe/ursula,greghaynes/ursula,j2sol/ursula,pgraziano/ursula,zrs233/ursula,zrs233/ursula,pbannister/ursula,EricCrosson/ursula,knandya/ursula,blueboxgroup/ursula,ryshah/ursula,panxia6679/ursula,davidcusatis/ursula,aldevigi/ursula,sivakom/ursula,MaheshIBM/ursula,edtubillara/ursula,retr0h/ursula,msambol/ursula,aldevigi/ursula,kennjason/ursula,pgraziano/ursula,ddaskal/ursula,davidcusatis/ursula,allomov/ursula,panxia6679/ursula,blueboxgroup/ursula,twaldrop/ursula,greghaynes/ursula,msambol/ursula,narengan/ursula,msambol/ursula,lihkin213/ursula,knandya/ursula,edtubillara/ursula,blueboxgroup/ursula,narengan/ursula,andrewrothstein/ursula,rongzhus/ursula