gateio, ftx and binance all use same funding fee formula

freqtrade/exchange/ftx.py

@@ -1,6 +1,5 @@
 """ FTX exchange subclass """
 import logging
-from datetime import datetime
 from typing import Any, Dict, List, Optional, Tuple
 
 import ccxt
@@ -184,25 +183,3 @@ class Ftx(Exchange):
             :nominal_value: Here for super method, not used on FTX
         """
         return 20.0
-
-    def _get_funding_rate(self, pair: str, when: datetime) -> Optional[float]:
-        """FTX doesn't use this"""
-        return None
-
-    def _get_funding_fee(
-        self,
-        pair: str,
-        contract_size: float,
-        mark_price: float,
-        premium_index: Optional[float],
-        # index_price: float,
-        # interest_rate: float)
-    ) -> float:
-        """
-            Calculates a single funding fee
-            Always paid in USD on FTX  # TODO: How do we account for this
-            : param contract_size: The amount/quanity
-            : param mark_price: The price of the asset that the contract is based off of
-            : param funding_rate: Must be None on ftx
-        """
-        return (contract_size * mark_price) / 24