Fix merge error

Author: ppkarwasz

log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/rolling/RollingAppenderCronTest.java

@@ -74,11 +74,6 @@ static void cleanUp() throws Exception {
         Files.deleteIfExists(CONFIG);
     }
 
-    @AfterAll
-    static void cleanUp() throws Exception {
-        Files.deleteIfExists(CONFIG);
-    }
-
     @Test
     @LoggerContextSource(timeout = 10)
     public void testAppender(final LoggerContext context, @Named("RollingFile") final RollingFileManager manager)