remove old Add-on Builder landing page (bug 1022030)
remove old Add-on Builder landing page (bug 1022030)

washort/zamboni,eviljeff/zamboni,washort/zamboni,elysium001/zamboni,clouserw/zamboni,luckylavish/zamboni,eviljeff/zamboni,kumar303/zamboni,tsl143/zamboni,clouserw/zamboni,luckylavish/zamboni,ddurst/zamboni,mudithkr/zamboni,shahbaz17/zamboni,ddurst/zamboni,ngokevin/zamboni,jamesthechamp/zamboni,tsl143/zamboni,washort/zamboni,ingenioustechie/zamboni,mozilla/zamboni,ayushagrawal288/zamboni,diox/zamboni,ingenioustechie/zamboni,diox/zamboni,Hitechverma/zamboni,kumar303/zamboni,jamesthechamp/zamboni,ingenioustechie/zamboni,ayushagrawal288/zamboni,jasonthomas/zamboni,jamesthechamp/zamboni,kumar303/zamboni,diox/zamboni,mstriemer/zamboni,kumar303/zamboni,elysium001/zamboni,diox/zamboni,jamesthechamp/zamboni,luckylavish/zamboni,ayushagrawal288/zamboni,Jobava/zamboni,Hitechverma/zamboni,mudithkr/zamboni,Hitechverma/zamboni,andymckay/zamboni,mozilla/zamboni,shahbaz17/zamboni,shahbaz17/zamboni,jasonthomas/zamboni,clouserw/zamboni,mstriemer/zamboni,jasonthomas/zamboni,andymckay/zamboni,eviljeff/zamboni,mstriemer/zamboni,elysium001/zamboni,ngokevin/zamboni,ddurst/zamboni,jasonthomas/zamboni,Hitechverma/zamboni,tsl143/zamboni,luckylavish/zamboni,shahbaz17/zamboni,Jobava/zamboni,Jobava/zamboni,clouserw/zamboni,eviljeff/zamboni,ddurst/zamboni,mozilla/zamboni,mudithkr/zamboni,mudithkr/zamboni,mstriemer/zamboni,washort/zamboni,elysium001/zamboni,Jobava/zamboni,ayushagrawal288/zamboni,mozilla/zamboni,andymckay/zamboni,ngokevin/zamboni,tsl143/zamboni,ingenioustechie/zamboni