Update py_json files to be compatible with pip standards

Signed-off-by: Matthew Stidham <stidmatt@gmail.com>

py-json/l4_cxprofile.py

@@ -1,15 +1,11 @@
 
 #!/usr/bin/env python3
 from LANforge.lfcli_base import LFCliBase
-import pprint
-from pprint import pprint
 import requests
 import pandas as pd
 import time
 import datetime
 import ast
-import csv
-import os
 
 class L4CXProfile(LFCliBase):
     def __init__(self, lfclient_host, lfclient_port, local_realm, debug_=False):