Remove the reference to android.support.v7.widget.Space

This view is being removed. This change removes it from revision list
as it cannot be used anymore.

Bug: 31068104
Change-Id: Id0d0baa1827b3c1136efca5a1982db817a78fe7c

docs/html/topic/libraries/support-library/revisions.jd

@@ -2895,8 +2895,6 @@ if (animator instanceof SimpleItemAnimator) {
         <ul>
           <li>Added {@link android.support.v7.widget.GridLayout} to provide support for the
             {@link android.widget.GridLayout} layout object.</li>
-          <li>Added {@link android.support.v7.widget.Space} which can be used to create blank areas
-            within a {@link android.support.v7.widget.GridLayout} layout object.</li>
         </ul>
     </dl>
   </div>