Revert "openzeppelin workaround for problematic test case"

This reverts commit c7e9eee.

Author: matheusaaguiar

test/externalTests/zeppelin.sh

@@ -97,9 +97,6 @@ function zeppelin_test
     sed -i "s|it(\('calling upgradeToAndCall from a contract that is not an ERC1967 proxy\)|it.skip(\1|g" test/proxy/utils/UUPSUpgradeable.test.js
     sed -i "s|it(\('rejects overflow'\)|it.skip(\1|g" test/token/ERC20/ERC20.test.js
     sed -i "s|it(\('decimals overflow'\)|it.skip(\1|g" test/token/ERC20/extensions/ERC4626.test.js
-    # TODO: Remove when next hardhat version releases, the fix is already merged: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5663
-    # Fails with ProviderError: Invalid transaction: GasFloorMoreThanGasLimit
-    sed -i "s|+ 2_000n|+ 10_000n|g" test/metatx/ERC2771Forwarder.test.js
 
     # Here only the testToInt(248) and testToInt(256) cases fail so change the loop range to skip them
     sed -i "s|range(8, 256, 8)\(.forEach(bits => testToInt(bits));\)|range(8, 240, 8)\1|" test/utils/math/SafeCast.test.js