Revert "EEx tests aware of CR+LF newline on Windows"

This reverts commit f60d366.

Author: José Valim

lib/eex/test/eex_test.exs

@@ -303,13 +303,13 @@ foo
   test "evaluates the source from a given file" do
     filename = Path.join(__DIR__, "fixtures/eex_template.eex")
     result = EEx.eval_file(filename)
-    assert result == "foo bar." <> os_newline
+    assert result == "foo bar.\n"
   end
 
   test "evaluates the source from a given file with bindings" do
     filename = Path.join(__DIR__, "fixtures/eex_template_with_bindings.eex")
     result = EEx.eval_file(filename, [bar: 1])
-    assert result == "foo 1" <> os_newline
+    assert result == "foo 1\n"
   end
 
   test "raises an Exception when there's an error with the given file" do
@@ -324,7 +324,7 @@ foo
   end
 
   test "defined from file" do
-    assert EExText.Compiled.file_sample(1) == "foo 1" <> os_newline
+    assert EExText.Compiled.file_sample(1) == "foo 1\n"
   end
 
   test "defined from file do not affect backtrace" do
@@ -356,13 +356,6 @@ foo
      }
   end
 
-  defp os_newline do
-    case :os.type do
-      {:win32, _} -> "\r\n"
-      _ -> "\n"
-    end
-  end
-
   defmodule TestEngine do
     @behaviour EEx.Engine