ruf cleanup imports, bigly.

core/models/logbooks.py

@@ -1,28 +1,11 @@
-import datetime
-import json
-import operator
-import os
-import re
-import string
-import subprocess
-from collections import defaultdict
-from datetime import datetime, timezone
 from pathlib import Path
 from urllib.parse import urljoin
 
-from django.conf import settings
-from django.contrib.auth.models import User
-from django.contrib.contenttypes.models import ContentType
-from django.core.files.storage import FileSystemStorage
 from django.db import models
-from django.db.models import Max, Min
-from django.shortcuts import render
-from django.template import Context, loader
 from django.urls import reverse
 
 import settings
-from troggle.core.models.survex import SurvexStation
-from troggle.core.models.troggle import DataIssue, Expedition, Person, PersonExpedition, TroggleModel
+from troggle.core.models.troggle import Expedition, TroggleModel
 
 """The model declarations  LogBookEntry, PersonLogEntry, QM
 """