From b83cb99e2871d7c6862dcedf6acb89530bda5d93 Mon Sep 17 00:00:00 2001
From: Daniel Wang <99078276+dantaik@users.noreply.github.com>
Date: Mon, 6 May 2024 16:20:00 +0800
Subject: [PATCH] refactor(protocol): remove unused state vars from TaikoL2
 (#17002)

---
 packages/protocol/contracts/L2/TaikoL2.sol | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/packages/protocol/contracts/L2/TaikoL2.sol b/packages/protocol/contracts/L2/TaikoL2.sol
index e0d36a4f97..6ae9d7d456 100644
--- a/packages/protocol/contracts/L2/TaikoL2.sol
+++ b/packages/protocol/contracts/L2/TaikoL2.sol
@@ -40,11 +40,8 @@ contract TaikoL2 is EssentialContract {
     /// @notice The last synced L1 block height.
     uint64 public lastSyncedBlock;
 
-    /// @notice The parent block's timestamp.
-    uint64 public parentTimestamp;
-
-    /// @notice The current block's timestamp.
-    uint64 private __currentBlockTimestamp;
+    uint64 private __deprecated1; // was parentTimestamp
+    uint64 private __deprecated2; // was __currentBlockTimestamp
 
     /// @notice The L1's chain ID.
     uint64 public l1ChainId;
@@ -100,7 +97,6 @@ contract TaikoL2 is EssentialContract {
         l1ChainId = _l1ChainId;
         gasExcess = _gasExcess;
         (publicInputHash,) = _calcPublicInputHash(block.number);
-        __currentBlockTimestamp = uint64(block.timestamp);
     }
 
     /// @notice Anchors the latest L1 block details to L2 for cross-layer
@@ -163,9 +159,6 @@ contract TaikoL2 is EssentialContract {
         bytes32 _parentHash = blockhash(parentId);
         l2Hashes[parentId] = _parentHash;
         publicInputHash = publicInputHashNew;
-
-        parentTimestamp = __currentBlockTimestamp;
-        __currentBlockTimestamp = uint64(block.timestamp);
         gasExcess = _gasExcess;
 
         emit Anchored(_parentHash, _gasExcess);