Removing unused imports in privacy_server.py to satisfy flake8 linting

scripts/privacy_server.py

@@ -1,18 +1,14 @@
 from pathlib import Path
 from tzlocal import get_localzone
-import pytz
-from time import sleep
 import datetime
 import sqlite3
 import requests
 import json
-from decimal import Decimal
 import time
 import math
 import numpy as np
 import librosa
 import operator
-import argparse
 import socket
 import threading
 import os