it isn't initializable anymore and we can remove zepplin upgradeable

packages/contracts-periphery/contracts/universal/op-nft/AttestationStation.sol

@@ -4,7 +4,7 @@ pragma solidity 0.8.15;
 import { Semver } from "@eth-optimism/contracts-bedrock/contracts/universal/Semver.sol";
 import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
 
-contract AttestationStation is Initializable, Semver {
+contract AttestationStation is Semver {
     struct AttestationData {
         address about;
         bytes32 key;