services: remove unused imports

A bit of clean up, as part of a review of the kernelci.
imports I was doing.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>

Author: padovan

src/lava_callback.py

@@ -9,7 +9,6 @@
 
 import gzip
 import json
-import requests
 import toml
 import threading
 import uvicorn

src/monitor.py

@@ -7,8 +7,6 @@
 # Author: Jeny Sadadia <jeny.sadadia@collabora.com>
 
 import datetime
-import json
-import logging
 import sys
 
 import kernelci

src/scheduler.py

@@ -13,7 +13,6 @@
 import yaml
 import requests
 import re
-import time
 import datetime
 
 import kernelci

src/test_report.py

@@ -10,10 +10,7 @@
 # Author: Alexandra Pereira <alexandra.pereira@collabora.com>
 # Author: Guillaume Tucker <guillaume.tucker@collabora.com>
 
-import logging
-import os
 import sys
-import traceback
 
 import kernelci.config
 import kernelci.db

src/trigger.py

@@ -8,17 +8,13 @@
 
 import copy
 from datetime import datetime, timedelta
-import json
-import logging
 import sys
 import time
 
-import kernelci
 import kernelci.build
 import kernelci.config
-import kernelci.db
+
 from kernelci.legacy.cli import Args, Command, parse_opts
-import urllib
 import requests
 import hashlib