Spring Duplicate given setup in @beforeEach and test methods in JpaTransactionManagerTests

I've noticed that some given setup logic in the @BeforeEach method is also repeated in several individual test methods in the JpaTransactionManagerTests.

Is there a specific reason for this duplication?

If not, is it okay if i remove duplicated setup in test methods?

for example

class JpaTransactionManagerTests {
        // ...

    @BeforeEach
    void setup() {
        given(factory.createEntityManager()).willReturn(manager);
        given(manager.getTransaction()).willReturn(tx);
        given(manager.isOpen()).willReturn(true);
    }

        @Test
    void testTransactionCommit() {
        given(manager.getTransaction()).willReturn(tx); // duplicated given setup

                // .. 
    }

Comment From: rstoyanchev

Superseded by #34807.