No. We are no longer under the Old Testament laws, but we must still uphold the Old Testament principles. This is because, with the death and resurrection of Christ, we are no longer in the system of law but the system of grace, if we approach God with faith in Jesus Christ. This is why Paul can say “the doers of the law will be justified” (Rom. 2:13) and “the law is holy” (Rom. 7:12). Paul is referring to the Law of Christ, not the letter of the law.
Jesus perfected the law in His New Covenant of grace, which is not concerned with the legal stipulations, but with the heart of man. This was God’s original purpose in giving the Jews the law - to move them to love God and their neighbor as themselves. But like Paul so often writes about, the Jews began to boast about their relationship with God in the law because they had the law written on tablets, and the Gentiles did not. In so doing, the Jews began to view God in a legalistic sense, like a debtor who owed them for their works, rather than a Father who owed them nothing, but would love them if they were to be faithful. When we don’t approach God as our loving Father through faith in Jesus Christ, we convert our relationship with God from a covenantal to a contractual one. Thus, our works become based on law (contract), not grace (covenant).
Paul repeatedly indicts the Jews for their boasting in the law (Rom. 2:17,23; Eph. 2:8-9). Paul said that they needed to put faith in Christ, and not in themselves. If we approach God as a debtor, we will be judged under the Old Covenant laws, and we will be condemned, because under the old laws, there was no mercy, and we would have to be perfect in order to be acquitted (James 2:10). But in the New Covenant, if we approach God with faith in Jesus Christ, we are in a system of grace, and God will reward us for being faithful. We have “obtained access to this grace” through Jesus Christ (Rom. 5:1-2).