```\n/// @dev only callable in the 1st year after deployment\nfunction removeNodeFromRegistry(address \_signer)\n    external\n    onlyActiveState(\_signer)\n{\n\n    // solium-disable-next-line security/no-block-members\n    require(block.timestamp < (blockTimeStampDeployment + YEAR\_DEFINITION), "only in 1st year");// solhint-disable-line not-rely-on-time\n    require(msg.sender == unregisterKey, "only unregisterKey is allowed to remove nodes");\n\n    SignerInformation storage si = signerIndex[\_signer];\n    In3Node memory n = nodes[si.index];\n\n    unregisterNodeInternal(si, n);\n\n}\n```\n