Remove unused Project#platform_tuple method
Remove unused Project#platform_tuple method

jamesn/omnibus,ashhher3/omnibus,servebox/omnibus,intfrr/omnibus,DataDog/omnibus-ruby,rapid7/omnibus,strangelittlemonkey/omnibus,pskrz/omnibus,adamleff/omnibus,pskrz/omnibus,mattray/omnibus,strangelittlemonkey/omnibus,DataDog/omnibus-ruby,hugosato/omnibus,servebox/omnibus,mattray/omnibus,Altiscale/omnibus,3ofcoins/chef-omnibus,Altiscale/omnibus,rhass/omnibus,lvfeng1130/omnibus,adamleff/omnibus,jamesn/omnibus,chef/omnibus,Scalr/omnibus,sh9189/omnibus,ashhher3/omnibus,DataDog/omnibus-ruby,rapid7/omnibus,sh9189/omnibus,Scalr/omnibus,higanworks/omnibus,szechyjs/omnibus,3ofcoins/chef-omnibus,chef/omnibus,rhass/omnibus,szechyjs/omnibus,Scalr/omnibus,rhass/omnibus,hugosato/omnibus,servebox/omnibus,higanworks/omnibus,lvfeng1130/omnibus,ashhher3/omnibus,rapid7/omnibus,szechyjs/omnibus,higanworks/omnibus,jamesn/omnibus,intfrr/omnibus,hugosato/omnibus,strangelittlemonkey/omnibus,lvfeng1130/omnibus,3ofcoins/chef-omnibus,chef/omnibus,Altiscale/omnibus,sh9189/omnibus,intfrr/omnibus,pskrz/omnibus,adamleff/omnibus,mattray/omnibus