BAEL-6812 Test Main Method with JUnit

- fixed missed review comments

testing-modules/junit-5-basics-2/src/test/java/com/baeldung/junit/main/test/TestSimpleMain.java

@@ -82,10 +82,8 @@ public class TestSimpleMain {
         System.setIn(fips);
         System.setOut(out);
 
-        //execute
         SimpleMain.main(arguments);
 
-        //verify
         String consoleOutput = byteArrayOutputStream.toString(Charset.defaultCharset());
         assertTrue(consoleOutput.contains("Calculated sum: 10"));