move download_backtest_data to scripts

freqtrade/tests/testdata/download_backtest_data.py

@@ -1,35 +0,0 @@
-#!/usr/bin/env python3
-
-"""This script generate json data from bittrex"""
-import json
-import sys
-
-from freqtrade import (exchange, arguments, misc)
-from freqtrade.exchange import ccxt
-
-BASE_PATH = 'freqtrade/tests/testdata'
-
-arguments = arguments.Arguments(sys.argv[1:], 'download utility')
-arguments.scripts_options()
-args = arguments.parse_args()
-
-TICKER_INTERVALS = ['1m', '5m']
-PAIRS = []
-
-if args.pair:
-    with open(args.pair) as file:
-        PAIRS = json.load(file)
-PAIRS = list(set(PAIRS))
-
-print('About to download pairs:', PAIRS)
-
-# Init Bittrex exchange
-exchange._API = ccxt.bittrex({'key': '', 'secret': ''})
-
-for pair in PAIRS:
-    for tick_interval in TICKER_INTERVALS:
-        print('downloading pair %s, interval %s' % (pair, tick_interval))
-        data = exchange.get_ticker_history(pair, tick_interval)
-        pair_print = pair.replace('/', '_')
-        filename = '{}-{}.json'.format(pair_print, tick_interval)
-        misc.file_dump_json(filename, data)