removed incorrect check

Author: Athryx

design/ectf25_design/util.py

@@ -101,8 +101,6 @@ def subscription_key_for_decoder(self, decoder_id: int) -> bytes:
 
     @classmethod
     def generate(cls, channel_ids: list[int]) -> Self:
-        assert len(channel_ids) <= 8, "Too many channel when generating global secrets"
-
         channels = {}
         # channel 0 always exists
         channels[0] = ChannelKey.generate()