Remove unused historic files

.gitmodules

@@ -1,9 +1,6 @@
 [submodule "lib/forge-std"]
 	path = lib/forge-std
 	url = https://github.com/foundry-rs/forge-std
-[submodule "lib/solidity-bits"]
-	path = lib/solidity-bits
-	url = https://github.com/estarriolvetch/solidity-bits
 [submodule "lib/solidity-bytes-utils"]
 	path = lib/solidity-bytes-utils
 	url = https://github.com/GNSPS/solidity-bytes-utils
@@ -26,13 +23,3 @@
 	path = lib/axelar-gmp-sdk-solidity
 	url = https://github.com/axelarnetwork/axelar-gmp-sdk-solidity
 
-[submodule "lib/immutable-seaport-core-1.6.0+im2"]
-	path = lib/immutable-seaport-core-1.6.0+im2
-	url = https://github.com/immutable/seaport-core
-
-[submodule "lib/immutable-seaport-1.6.0+im4"]
-	path = lib/immutable-seaport-1.6.0+im4
-	url = https://github.com/immutable/seaport
-[submodule "lib/creator-token-standards"]
-	path = lib/creator-token-standards
-	url = https://github.com/limitbreakinc/creator-token-standards

contracts/allowlist/OperatorAllowlistEnforced.sol

@@ -5,7 +5,7 @@ pragma solidity >=0.8.19 <0.8.29;
 
 import {IOperatorAllowlist} from "./IOperatorAllowlist.sol";
 import {IERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
-import {OperatorAllowlistEnforcementErrors} from "../errors/Errors.sol";
+import {OperatorAllowlistEnforcementErrors} from "./OperatorAllowlistEnforcementErrors.sol";
 
 // Disable this code size warning as there is no plan to change this logic.
 // forge-lint: disable-start(unwrapped-modifier-logic)

contracts/allowlist/OperatorAllowlistEnforcementErrors.sol

@@ -0,0 +1,22 @@
+//SPDX-License-Identifier: Apache 2.0
+pragma solidity >=0.8.19 <0.8.29;
+
+interface OperatorAllowlistEnforcementErrors {
+    /// @dev Error thrown when the operatorAllowlist address does not implement the IOperatorAllowlist interface
+    error AllowlistDoesNotImplementIOperatorAllowlist();
+
+    /// @dev Error thrown when calling address is not OperatorAllowlist
+    error CallerNotInAllowlist(address caller);
+
+    /// @dev Error thrown when 'from' address is not OperatorAllowlist
+    error TransferFromNotInAllowlist(address from);
+
+    /// @dev Error thrown when 'to' address is not OperatorAllowlist
+    error TransferToNotInAllowlist(address to);
+
+    /// @dev Error thrown when approve target is not OperatorAllowlist
+    error ApproveTargetNotInAllowlist(address target);
+
+    /// @dev Error thrown when approve target is not OperatorAllowlist
+    error ApproverNotInAllowlist(address approver);
+}

contracts/payment-splitter/PaymentSplitter.sol

@@ -5,7 +5,7 @@ pragma solidity >=0.8.19 <0.8.29;
 import {SafeERC20, IERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
 import {Address} from "@openzeppelin/contracts/utils/Address.sol";
 import {AccessControlEnumerable} from "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
-import {IPaymentSplitterErrors} from "../errors/PaymentSplitterErrors.sol";
+import {IPaymentSplitterErrors} from "./PaymentSplitterErrors.sol";
 import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
 
 /**