remove double header (#1692)
remove double header (#1692)


nscyclone/elixir-school,doomspork/elixir-school,nscyclone/elixir-school,nscyclone/elixir-school,nscyclone/elixir-school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir_school,doomspork/elixir-school