Fix spec for project create service

spec/services/projects/create_service_spec.rb

@@ -125,15 +125,14 @@ describe Projects::CreateService, '#execute', services: true do
     end
   end
 
-  context "git hook sample" do
-    before do
-      @push_rule_sample = create :push_rule_sample
-    end
+  context 'git hook sample' do
+    it 'creates git hook from sample' do
+      push_rule_sample = create(:push_rule_sample)
+
+      push_rule = create_project(user, opts).push_rule
 
-    it "creates git hook from sample" do
-      push_rule = create_project(@user, @opts).push_rule
       [:force_push_regex, :deny_delete_tag, :delete_branch_regex, :commit_message_regex].each do |attr_name|
-        expect(push_rule.send(attr_name)).to eq @push_rule_sample.send(attr_name)
+        expect(push_rule.send(attr_name)).to eq push_rule_sample.send(attr_name)
       end
     end
   end