Remove two-fer test

exercises/two-fer/.meta/version

@@ -0,0 +1 @@
+1.2.0

exercises/two-fer/src/test/java/TwoferTest.java

@@ -38,13 +38,4 @@ public class TwoferTest {
 
         assertEquals(expected, twofer.twofer(input));
     }
-
-    @Ignore("Remove to run test")
-    @Test
-    public void emptyStringGiven() {
-        String input = "";
-        String expected = "One for , one for me.";
-
-        assertEquals(expected, twofer.twofer(input) );
-    }
 }