Futures endpoint brings coins that are not in the Binance list

[r00t1ng]

Describe the bug
I am running the futures_exchange_info() and it returns coins such as HNT and TOMO that are no longer in Binance listing of futures.

To Reproduce

def get_coins():
    futures_exchange_info = client.futures_exchange_info()
    trading_pairs = [info['symbol'] for info in futures_exchange_info['symbols']]

Expected behavior
A clear and concise description of what you expected to happen.

Environment (please complete the following information):

• Python version: 3.9.13
• Virtual Env: conda
• OS: windows
• python-binance version: 1.0.16