Merge pull request #1750 from hroff-1902/ccxt-to-exchange-only

minor: limit usage of ccxt to freqtrade/exchange only

scripts/plot_profit.py

@@ -27,10 +27,12 @@ from plotly.offline import plot
 from freqtrade.arguments import Arguments
 from freqtrade.configuration import Configuration
 from freqtrade.data import history
-from freqtrade.misc import common_datearray, timeframe_to_seconds
+from freqtrade.exchange import timeframe_to_seconds
+from freqtrade.misc import common_datearray
 from freqtrade.resolvers import StrategyResolver
 from freqtrade.state import RunMode
 
+
 logger = logging.getLogger(__name__)