Remove marpaia since he's inactive
Remove marpaia since he's inactive

rubygems/rubygems-infrastructure,mbrukman/rubygems-infrastructure,indirect/rubygems-infrastructure,rubygems/rubygems-infrastructure,mbrukman/rubygems-infrastructure,mbrukman/rubygems-infrastructure,rubygems/rubygems-infrastructure,indirect/rubygems-infrastructure,indirect/rubygems-infrastructure,rubygems/rubygems-infrastructure,mbrukman/rubygems-infrastructure,rubygems/rubygems-infrastructure,indirect/rubygems-infrastructure