ruf cleanup imports, bigly.

core/views/statistics.py

@@ -1,21 +1,12 @@
-import datetime
-import operator
-import os.path
-import re
 from collections import OrderedDict
 from pathlib import Path
 
-import django.db.models
-from django.db.models import Max, Min
 from django.shortcuts import render
-from django.template import Context, loader
-from django.template.defaultfilters import slugify
-from django.utils import timezone
 
 import troggle.settings as settings
 from troggle.core.models.caves import Cave, Entrance
 from troggle.core.models.logbooks import LogbookEntry
-from troggle.core.models.survex import SurvexBlock, SurvexStation
+from troggle.core.models.survex import SurvexStation
 from troggle.core.models.troggle import DataIssue, Expedition, Person, PersonExpedition
 from troggle.parsers.people import GetPersonExpeditionNameLookup, foreign_friends