Actually remove system and pretranslation user fixtures from pontoon.…

…insights tests

pontoon/insights/tests/test_views.py

@@ -6,14 +6,12 @@
 
 import pytest
 from dateutil.relativedelta import relativedelta
-from django.contrib.auth.models import User
 from django.shortcuts import render
 from django.urls import reverse
 
 from pontoon.actionlog.models import ActionLog
 from pontoon.insights import views
 from pontoon.test.factories import (
-    UserFactory,
     ResourceFactory,
     TranslationFactory,
 )
@@ -37,17 +35,6 @@ class MonthlyQualityEntry:
     rejected: int
 
 
-@pytest.fixture
-def system_user():
-    # Test data doesn't contain the system user, so we create them here.
-    return UserFactory(email="pontoon-sync@example.com")
-
-
-@pytest.fixture
-def pretranslation_user():
-    return User.objects.get(email="pontoon-tm@example.com")
-
-
 @pytest.mark.django_db
 def test_default_empty(
     client, system_user, pretranslation_user, locale_a, project_a, user_a