Remove deprecated java code

Summary: Remove deprecated java code and make use of CSSEdge instead of the now removed Spacing class.

Reviewed By: AaaChiuuu

Differential Revision: D4233198

fbshipit-source-id: 736d79be266e1b9f2d62e5fe6d901de47123cdc1

java/tests/com/facebook/csslayout/CSSNodeTest.java

@@ -36,7 +36,7 @@ public class CSSNodeTest {
           return MeasureOutput.make(100, 100);
         }
     });
-    node.calculateLayout(null);
+    node.calculateLayout();
     assertEquals(100, (int) node.getLayoutWidth());
     assertEquals(100, (int) node.getLayoutHeight());
   }