remove buffer variable

op-batcher/batcher/driver.go

@@ -596,22 +596,11 @@ func (l *BatchSubmitter) waitNodeSyncAndClearState() {
 // safe head progress given fully submitted channels held in
 // state.
 func (l *BatchSubmitter) checkExpectedProgress(syncStatus eth.SyncStatus) error {
-
-	// Define a buffer: a delay denominated in L1 blocks
-	// to allow verifier to process blocks.
-	// Set to 0 to require immediate safe head advancement.
-	// Set to 1 to allow e.g. 12s for the safe head to advance
-	// after the L1 inclusion block was ingested.
-	// TODO extract this into a config variable
-	// TODO should we also wait numConfirmations (this is a txmgr config variable, not in scope of the batch submitter)
-
-	BUFFER := uint64(1)
-
 	verifierCurrentL1 := syncStatus.CurrentL1
 	for _, ch := range l.state.channelQueue {
 		if ch.isFullySubmitted() && // This implies a number of l1 confirmations has passed, depending on how the txmgr was configured
 			!ch.isTimedOut() &&
-			verifierCurrentL1.Number > ch.maxInclusionBlock+BUFFER &&
+			verifierCurrentL1.Number > ch.maxInclusionBlock &&
 			syncStatus.SafeL2.Number < ch.LatestL2().Number {
 			return errors.New("safe head did not make expected progress")
 		}