Remove unit test

core-java-modules/core-java-8-2/src/main/java/com/baeldung/delay/Delay.java

@@ -87,9 +87,5 @@ public class Delay {
     private static void someTask2() {
         System.out.println("Task 2 completed.");
     }
-    
-    public static int main(Boolean isTest) {
-        return 0;
-    }
 
 }

core-java-modules/core-java-8-2/src/test/java/com/baeldung/delay/DelayUnitTest.java

@@ -1,14 +0,0 @@
-package com.baeldung.delay;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import org.junit.jupiter.api.Test;
-
-public class DelayUnitTest {
-
-    @Test
-    void givenMain_returnZero() {
-        assertEquals(Delay.main(true), 0);
-    }
-    
-}