Honor skip_pair_validation setting when downloading pairs.

freqtrade/commands/data_commands.py

@@ -48,6 +48,7 @@ def start_download_data(args: Dict[str, Any]) -> None:
     # Init exchange
     exchange = ExchangeResolver.load_exchange(config['exchange']['name'], config, validate=False)
     # Manual validations of relevant settings
+    if not config['exchange'].get('skip_pair_validation', False):
         exchange.validate_pairs(config['pairs'])
     expanded_pairs = expand_pairlist(config['pairs'], list(exchange.markets))