Permissions
The Enforce Default AWS VPCs Are Deleted policy pack requires 14 permissions:
ec2:DeleteInternetGatewayec2:DeleteSecurityGroupec2:DeleteSubnetec2:DeleteVpcec2:DescribeDhcpOptionsec2:DescribeInstancesec2:DescribeInternetGatewaysec2:DescribeNetworkAclsec2:DescribeNetworkInterfacesec2:DescribeRouteTablesec2:DescribeSecurityGroupsec2:DescribeSubnetsec2:DescribeVpcPeeringConnectionsec2:DetachInternetGateway