now using exch_info in search_symbols

piker/brokers/deribit/api.py

@@ -452,19 +452,15 @@ class Client:
         Fuzzy search symbology set for pairs matching `pattern`.
 
         '''
-        pairs: dict[str, Pair] = await self.symbol_info()
-        matches: dict[str, Pair] = match_from_pairs(
+        pairs: dict[str, Pair] = await self.exch_info()
+
+        return match_from_pairs(
             pairs=pairs,
             query=pattern.upper(),
             score_cutoff=35,
             limit=limit
         )
 
-       # repack in name-keyed table
-        return {
-            pair.instrument_name.lower(): pair
-            for pair in matches.values()
-        }
 
     async def bars(
         self,