Remove unnecessary classes / modules used by config (#1897)

* Remove` Pry::Config::Default`

* Remove `Pry::Config::Memoization`

* Remove confusing use of `instance_eval`

* Add `Pry::Config.defaults`
  Returns an instance of `Pry::Config`, initialized with Pry defaults.
  Replaces the previous role of `Pry::Config::Default`.

1 files changed, 0 insertions, 20 deletions

diff --git a/spec/config/memoization_spec.rb b/spec/config/memoization_spec.rb
deleted file mode 100644
index 59a3353e..00000000
--- a/spec/config/memoization_spec.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-RSpec.describe Pry::Config::Memoization do
-  let(:config) do
-    Class.new do
-      include Pry::Config::Memoization
-      def_memoized({foo: proc { "foo" }, bar: proc { "bar" }})
-    end.new
-  end
-
-  describe "on call of method" do
-    it "memoizes the return value" do
-      expect(config.foo).to be(config.foo)
-    end
-  end
-
-  describe "#memoized_methods" do
-    it "tracks a list of memoized methods" do
-      expect(config.memoized_methods).to eq([:foo, :bar])
-    end
-  end
-end