Remove deprecated Feature class implementation

This became dead code now.

lib/open_food_network/feature_toggle.rb

@@ -30,14 +30,9 @@ def self.enabled?(feature_name, user = nil)
       new.enabled?(feature_name, user)
     end
 
-    def self.enable(feature_name, user_emails = nil, &block)
+    def self.enable(feature_name, &block)
       Thread.current[:features] ||= {}
-
-      if user_emails.nil?
-        Thread.current[:features][feature_name] = BlockFeature.new(block)
-      else
-        Thread.current[:features][feature_name] = Feature.new(user_emails)
-      end
+      Thread.current[:features][feature_name] = Feature.new(block)
     end
 
     def initialize
@@ -70,27 +65,13 @@ def true?(value)
     end
   end
 
-  class Feature
-    def initialize(users = [])
-      @users = users
-    end
-
-    def enabled?(user)
-      users.include?(user.email)
-    end
-
-    private
-
-    attr_reader :users
-  end
-
   class NullFeature
     def enabled?(_user)
       false
     end
   end
 
-  class BlockFeature
+  class Feature
     def initialize(block)
       @block = block
     end

spec/lib/open_food_network/feature_toggle_spec.rb

@@ -32,26 +32,6 @@ def stub_foo(value)
     context 'when specifying users' do
       let(:user) { build(:user) }
 
-      context 'and the feature is enabled for them' do
-        before { FeatureToggle.enable(:foo, [user.email]) }
-
-        it 'returns true' do
-          expect(FeatureToggle.enabled?(:foo, user)).to eq(true)
-        end
-      end
-
-      context 'and the feature is disabled for them' do
-        before { FeatureToggle.enable(:foo, []) }
-
-        it 'returns false' do
-          expect(FeatureToggle.enabled?(:foo, user)).to eq(false)
-        end
-      end
-    end
-
-    context 'when passing in a block' do
-      let(:user) { build(:user) }
-
       context 'and the block does not specify arguments' do
         before do
           FeatureToggle.enable(:foo) { 'return value' }