Removed demo code

src/test/java/de/rwu/easydrop/demo/DemoClassTest.java

@@ -1,19 +0,0 @@
-package de.rwu.easydrop.demo;
-
-import static org.junit.Assert.assertEquals;
-
-import org.junit.Test;
-
-public class DemoClassTest {
-    private final DemoClass demoClass = new DemoClass();
-
-    @Test
-    public void testInvertBoolTrue() {
-        assertEquals("Inverting true should return false", false, demoClass.invertBool(true));
-    }
-
-    @Test
-    public void testInvertBoolFalse() {
-        assertEquals("Inverting false should return true", true, demoClass.invertBool(false));
-    }
-}