Removed unnecessary .challb
Removed unnecessary .challb

mitnk/letsencrypt,riseofthetigers/letsencrypt,BillKeenan/lets-encrypt-preview,brentdax/letsencrypt,jtl999/certbot,goofwear/letsencrypt,jtl999/certbot,BillKeenan/lets-encrypt-preview,g1franc/lets-encrypt-preview,thanatos/lets-encrypt-preview,sjerdo/letsencrypt,kuba/letsencrypt,VladimirTyrin/letsencrypt,hsduk/lets-encrypt-preview,martindale/letsencrypt,stweil/letsencrypt,thanatos/lets-encrypt-preview,xgin/letsencrypt,Sveder/letsencrypt,deserted/letsencrypt,xgin/letsencrypt,bsmr-misc-forks/letsencrypt,kuba/letsencrypt,sjerdo/letsencrypt,jsha/letsencrypt,g1franc/lets-encrypt-preview,Jadaw1n/letsencrypt,DavidGarciaCat/letsencrypt,DavidGarciaCat/letsencrypt,lbeltrame/letsencrypt,rlustin/letsencrypt,goofwear/letsencrypt,dietsche/letsencrypt,wteiken/letsencrypt,TheBoegl/letsencrypt,Bachmann1234/letsencrypt,letsencrypt/letsencrypt,piru/letsencrypt,BKreisel/letsencrypt,lbeltrame/letsencrypt,twstrike/le_for_patching,twstrike/le_for_patching,VladimirTyrin/letsencrypt,lmcro/letsencrypt,piru/letsencrypt,tyagi-prashant/letsencrypt,brentdax/letsencrypt,Jadaw1n/letsencrypt,deserted/letsencrypt,mrb/letsencrypt,lmcro/letsencrypt,martindale/letsencrypt,bsmr-misc-forks/letsencrypt,rlustin/letsencrypt,wteiken/letsencrypt,jsha/letsencrypt,TheBoegl/letsencrypt,hsduk/lets-encrypt-preview,stweil/letsencrypt,Sveder/letsencrypt,mitnk/letsencrypt,Bachmann1234/letsencrypt,BKreisel/letsencrypt,dietsche/letsencrypt,letsencrypt/letsencrypt,ghyde/letsencrypt,riseofthetigers/letsencrypt,ghyde/letsencrypt,tyagi-prashant/letsencrypt,mrb/letsencrypt