Landscape grid changes for Workspace/All Apps.

This is the just first CL to get eyes on the changes.
Next CL will update the All Apps to be full width.

Bug: 37015359
Change-Id: I2d7ec6851fdc13b8fa654e7e2be3152330243ccc
diff --git a/res/layout/all_apps.xml b/res/layout/all_apps.xml
index ff605f4..a3c2535 100644
--- a/res/layout/all_apps.xml
+++ b/res/layout/all_apps.xml
@@ -53,9 +53,7 @@
             android:clipToPadding="false"
             android:overScrollMode="never"
             android:descendantFocusability="afterDescendants"
-            android:focusable="true"
-            android:paddingStart="@dimen/dynamic_grid_edge_margin"
-            android:paddingEnd="@dimen/dynamic_grid_edge_margin" />
+            android:focusable="true" />
 
         <!-- Fast scroller popup -->
         <TextView