Revert "Adds &Kernel.identity/1 (#9182)"
Revert "Adds &Kernel.identity/1 (#9182)"

Pending further mailing list discussion.

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