Refactor code structure and remove redundant changes

backend/api/v1/parks/urls.py

@@ -0,0 +1,14 @@
+"""
+Park API URLs for ThrillWiki API v1.
+"""
+from django.urls import path, include
+from rest_framework.routers import DefaultRouter
+
+from .views import ParkPhotoViewSet
+
+router = DefaultRouter()
+router.register(r"photos", ParkPhotoViewSet, basename="park-photo")
+
+urlpatterns = [
+    path("", include(router.urls)),
+]