Revert "a11y: disabling accessibility scrolling of the home screen"

This reverts commit 52b2b43c56.

Reason for revert: Per an email thread, this CL is considered a hack.

Change-Id: Id97fc9a398184ba18c2188d858218bc2d9ddc16e
(cherry picked from commit 310093d050)

src/com/android/launcher3/Workspace.java

@@ -53,7 +53,6 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewTreeObserver;
-import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.Toast;
 
 import com.android.launcher3.Launcher.LauncherOverlay;
@@ -3468,10 +3467,4 @@ public class Workspace extends PagedView<WorkspacePageIndicator>
             onEndStateTransition();
         }
     }
-
-    @Override
-    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
-        super.onInitializeAccessibilityNodeInfo(info);
-        info.setScrollable(false);
-    }
 }