remove extraneous logic

Author: aditi-khare-mongoDB

src/error.ts

@@ -1240,13 +1240,13 @@ export function needsRetryableWriteLabel(
     }
   }
 
-  // For writeConcernErrors from a pre-4.4 mongos response, do not use the code to determine retryability.
-  const isShardedAndPre4_4 = isSharded && maxWireVersion <= 9;
+  // For writeConcernErrors from a pre-4.4 mongos response, do not use the error code to determine retryability.
+  const isShardedAndPre4_4 = isSharded && maxWireVersion < 9;
   if (error instanceof MongoWriteConcernError && !isShardedAndPre4_4) {
     return RETRYABLE_WRITE_ERROR_CODES.has(error.result?.code ?? error.code ?? 0);
   }
 
-  if (error instanceof MongoError && typeof error.code === 'number' && !isShardedAndPre4_4) {
+  if (error instanceof MongoError && typeof error.code === 'number') {
     return RETRYABLE_WRITE_ERROR_CODES.has(error.code);
   }