refactor redundant code

piker/brokers/deribit/api.py

@@ -449,15 +449,9 @@ class Client:
 
         for instrument in mkt_pairs:
             pair_type: Type = PAIRTYPES[venue]
-            try:
-                pair: Pair = pair_type(**mkt_pairs[instrument].to_dict())
-            except Exception as e:
-                e.add_note(
-                    "\nDon't panic, prolly stupid binance changed their symbology schema again..\n"
-                    'Check out their API docs here:\n\n'
-                    'https://binance-docs.github.io/apidocs/spot/en/#exchange-information'
-                )
-                raise
+
+            pair: Pair = pair_type(**mkt_pairs[instrument].to_dict())
+
             pair_table[pair.symbol.upper()] = pair
 
             # update an additional top-level-cross-venue-table