Remove outdated comment

Author: simolus3

packages/service-core/src/sync/sync.ts

@@ -200,13 +200,6 @@ async function* streamResponseInner(
       function markOperationsSent(operations: number) {
         syncedOperations += operations;
         tracker.addOperationsSynced(operations);
-        // Disable interrupting checkpoints for now.
-        // There is a bug with interrupting checkpoints where:
-        // 1. User is in the middle of syncing a large batch of data (for example initial sync).
-        // 2. A new checkpoint comes in, which interrupts the batch.
-        // 3. However, the new checkpoint does not contain any new data for this connection, so nothing further is synced.
-        // This then causes the client to wait indefinitely for the remaining data or checkpoint_complete message. That is
-        // only resolved when a new checkpoint comes in that does have data for this connection, or the connection is restarted.
         maybeRaceForNewCheckpoint();
       }