remove unused rake task
remove unused rake task

geraspora/diaspora,Muhannes/diaspora,Amadren/diaspora,spixi/diaspora,Muhannes/diaspora,Flaburgan/diaspora,KentShikama/diaspora,SuperTux88/diaspora,despora/diaspora,geraspora/diaspora,spixi/diaspora,geraspora/diaspora,jhass/diaspora,despora/diaspora,diaspora/diaspora,Flaburgan/diaspora,KentShikama/diaspora,jhass/diaspora,Amadren/diaspora,despora/diaspora,KentShikama/diaspora,jhass/diaspora,spixi/diaspora,jhass/diaspora,diaspora/diaspora,geraspora/diaspora,SuperTux88/diaspora,KentShikama/diaspora,Flaburgan/diaspora,diaspora/diaspora,Amadren/diaspora,diaspora/diaspora,despora/diaspora,Muhannes/diaspora,Muhannes/diaspora,Amadren/diaspora,SuperTux88/diaspora,SuperTux88/diaspora,Flaburgan/diaspora,spixi/diaspora