Remove unused variable from DocTest
Remove unused variable from DocTest

antipax/elixir,lexmag/elixir,gfvcastro/elixir,pedrosnk/elixir,joshprice/elixir,kimshrier/elixir,gfvcastro/elixir,lexmag/elixir,ggcampinho/elixir,elixir-lang/elixir,ggcampinho/elixir,pedrosnk/elixir,beedub/elixir,kelvinst/elixir,michalmuskala/elixir,kimshrier/elixir,kelvinst/elixir,beedub/elixir,antipax/elixir