Disable test output

Author: marcphilipp

platform-tests/src/test/resources/log4j2-test.xml

@@ -11,6 +11,7 @@
 		<Logger name="org.junit.platform.engine.support.descriptor.DemoClassTestDescriptor" level="error" />
 		<Logger name="org.junit.platform.launcher.core.CompositeEngineExecutionListener" level="error" />
 		<Logger name="org.junit.platform.launcher.core.CompositeTestExecutionListener" level="error" />
+		<Logger name="org.junit.platform.launcher.core.DiscoveryIssueCollector" level="off" />
 		<Logger name="org.junit.platform.launcher.core.DiscoveryIssueNotifier" level="off" />
 		<Logger name="org.junit.platform.launcher.core.EngineIdValidator" level="fatal" />
 		<Logger name="org.junit.platform.launcher.core.EngineFilterer" level="error" />