🔍 Stop clearing quiet history (#637)

src/Lynx/Search/IDDFS.cs

@@ -303,10 +303,7 @@ private int CheckPonderHit(ref SearchResult? lastSearchResult, int depth)
             Array.Clear(_killerMoves[2]);
             Debug.Assert(_killerMoves.Length == 3);
 
-            for (int i = 0; i < _quietHistory.Length; i++)
-            {
-                Array.Clear(_quietHistory[i]);
-            }
+            // Not clearing _quietHistory on purpose
 
             // Not clearing _captureHistory on purpose
         }