Fix code style

core/src/test/java/org/springframework/security/core/JavaVersionTests.java

@@ -20,8 +20,6 @@ import java.io.DataInputStream;
 import java.io.InputStream;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.condition.EnabledOnJre;
-import org.junit.jupiter.api.condition.JRE;
 
 import static org.assertj.core.api.Assertions.assertThat;