Remove remaining references to build_embedded

Author: josevalim

lib/mix/lib/mix.ex

@@ -1076,7 +1076,6 @@ defmodule Mix do
   defp install_project_config(dynamic_config) do
     [
       version: "0.1.0",
-      build_embedded: false,
       build_per_environment: true,
       build_path: "_build",
       lockfile: "mix.lock",

lib/mix/lib/mix/project.ex

@@ -983,7 +983,6 @@ defmodule Mix.Project do
   defp default_config do
     [
       aliases: [],
-      build_embedded: false,
       build_per_environment: true,
       build_scm: Mix.SCM.Path,
       config_path: "config/config.exs",

lib/mix/lib/mix/tasks/compile.ex

@@ -16,10 +16,6 @@ defmodule Mix.Tasks.Compile do
 
   ## Configuration
 
-    * `:build_embedded` - this option was used to copy all code and
-      priv content to the `_build` directory. However, this option no
-      longer has an effect as Elixir will now copy those at release time
-
     * `:compilers` - compilers to run, defaults to `Mix.compilers/0`,
       which are `[:erlang, :elixir, :app]`.
 

lib/mix/test/mix/project_test.exs

@@ -120,7 +120,7 @@ defmodule Mix.ProjectTest do
 
   test "builds the project structure without symlinks" do
     in_fixture("archive", fn ->
-      config = [deps_app_path: Path.expand("_build/archive"), build_embedded: true]
+      config = [deps_app_path: Path.expand("_build/archive")]
       assert Mix.Project.build_structure(config) == :ok
       assert File.dir?("_build/archive/ebin")
       assert {:error, _} = :file.read_link("_build/archive/ebin")

lib/mix/test/test_helper.exs

@@ -416,8 +416,7 @@ if not File.dir?(target) do
   File.mkdir_p!(Path.join(target, "ebin"))
   File.mkdir_p!(Path.join(target, "src"))
 
-  # This is used to test that the built-in ebin is ignored
-  # when build_embedded is true.
+  # This is used to test that the built-in ebin is ignored.
   File.write!(Path.join(target, "ebin/.unused"), """
   """)