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.

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