Polish "Enable Java 18 for LoaderIntegrationTests"

See gh-30422

spring-boot-tests/spring-boot-integration-tests/spring-boot-loader-tests/src/intTest/java/org/springframework/boot/loader/LoaderIntegrationTests.java

@@ -23,8 +23,6 @@ import java.util.List;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import org.junit.jupiter.api.condition.EnabledForJreRange;
-import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.testcontainers.containers.GenericContainer;
@@ -52,7 +50,6 @@ class LoaderIntegrationTests {
 
 	@ParameterizedTest
 	@MethodSource("javaRuntimes")
-	@EnabledForJreRange(max = JRE.JAVA_17)
 	void readUrlsWithoutWarning(JavaRuntime javaRuntime) {
 		try (GenericContainer<?> container = createContainer(javaRuntime)) {
 			container.start();