Remove dependency to Spree::ApiConfiguration, overall requires_authentication? is true, exceptions will be endpoint specific

app/controllers/spree/api/base_controller.rb

@@ -57,7 +57,7 @@ module Spree
       def check_for_user_or_api_key
         # User is already authenticated with Spree, make request this way instead.
         return true if @current_api_user = try_spree_current_user ||
-                                           !Spree::Api::Config[:requires_authentication]
+                                           !requires_authentication?
 
         return if api_key.present?
         render("spree/api/errors/must_specify_api_key", status: :unauthorized) && return
@@ -86,7 +86,7 @@ module Spree
       end
 
       def requires_authentication?
-        Spree::Api::Config[:requires_authentication]
+        true
       end
 
       def not_found

spec/controllers/spree/api/base_controller_spec.rb

@@ -14,7 +14,6 @@ describe Spree::Api::BaseController do
     before do
       allow(controller).to receive_messages try_spree_current_user:
                                               double(email: "spree@example.com")
-      Spree::Api::Config[:requires_authentication] = true
     end
 
     it "can make a request" do

spec/spec_helper.rb

@@ -127,8 +127,6 @@ RSpec.configure do |config|
       spree_config.shipping_instructions = true
       spree_config.auto_capture = true
     end
-
-    Spree::Api::Config[:requires_authentication] = true
   end
 
   # Helpers