Remove empty test class

Dead, unmaintained code eventually leads to problems.

forge-game/src/test/java/forge/game/card/CardCopyServiceTest.java

@@ -1,26 +0,0 @@
-package forge.game.card;
-
-import org.testng.annotations.Test;
-
-public class CardCopyServiceTest {
-
-    @Test
-    public void testCopyCard() {
-
-    }
-
-    @Test
-    public void testCopyState() {
-
-    }
-
-    @Test
-    public void testCopyStats() {
-
-    }
-
-    @Test
-    public void testGetLKICopy() {
-
-    }
-}