Remove extra attribute

Registrar can be queried from user

#700

spec/requests/epp/contact/create/ident_spec.rb

@@ -3,7 +3,7 @@ require 'rails_helper'
 RSpec.describe 'EPP contact:create' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:request) { post '/epp/command/create', { frame: request_xml }, 'HTTP_COOKIE' => "session=#{session_id}" }
 
   before do

spec/requests/epp/contact/create/phone_spec.rb

@@ -4,7 +4,7 @@ require_relative '../shared/phone'
 RSpec.describe 'EPP contact:create' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:request) { post '/epp/command/create', { frame: request_xml }, 'HTTP_COOKIE' => "session=#{session_id}" }
   let(:request_xml) { <<-XML
     <?xml version="1.0" encoding="UTF-8" standalone="no"?>

spec/requests/epp/contact/create_spec.rb

@@ -3,7 +3,7 @@ require 'rails_helper'
 RSpec.describe 'EPP contact:create' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:request_xml_with_address) { '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <epp xmlns="https://epp.tld.ee/schema/epp-ee-1.0.xsd">
       <command>

spec/requests/epp/contact/delete/used_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 RSpec.describe 'EPP contact:delete' do
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:user) { create(:api_user, registrar: registrar) }
   let(:registrar) { create(:registrar) }
   let!(:registrant) { create(:registrant, registrar: registrar, code: 'TEST') }

spec/requests/epp/contact/info_spec.rb

@@ -3,7 +3,7 @@ require 'rails_helper'
 RSpec.describe 'EPP contact:update' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:request_xml) { '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <epp xmlns="https://epp.tld.ee/schema/epp-ee-1.0.xsd">
       <command>

spec/requests/epp/contact/update/ident_spec.rb

@@ -5,7 +5,7 @@ require 'rails_helper'
 RSpec.describe 'EPP contact:update' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:ident) { contact.identifier }
   let(:request) { post '/epp/command/update', { frame: request_xml }, 'HTTP_COOKIE' => "session=#{session_id}" }
   let(:request_xml) { <<-XML

spec/requests/epp/contact/update/phone_spec.rb

@@ -4,7 +4,7 @@ require_relative '../shared/phone'
 RSpec.describe 'EPP contact:update' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let!(:contact) { create(:contact, code: 'TEST') }
   let(:request) { post '/epp/command/update', { frame: request_xml }, 'HTTP_COOKIE' => "session=#{session_id}" }
   let(:request_xml) { <<-XML

spec/requests/epp/contact/update_spec.rb

@@ -3,7 +3,7 @@ require 'rails_helper'
 RSpec.describe 'EPP contact:update' do
   let(:registrar) { create(:registrar) }
   let(:user) { create(:api_user_epp, registrar: registrar) }
-  let(:session_id) { create(:epp_session, user: user, registrar: registrar).session_id }
+  let(:session_id) { create(:epp_session, user: user).session_id }
   let(:request_xml_with_address) { '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <epp xmlns="https://epp.tld.ee/schema/epp-ee-1.0.xsd">
       <command>