chips: the seperator methods are no longer needed.

Check this in after:
https://android-git.corp.google.com/g/#change,123745

Change-Id: I3228251debfd4a81cd2dc16f05636d64533f9c6d

src/com/android/email/RecipientAdapter.java

@@ -63,16 +63,6 @@ public class RecipientAdapter extends BaseRecipientAdapter {
         return R.layout.chips_recipient_dropdown_item;
     }
 
-    @Override
-    protected int getSeparatorLayout() {
-        return R.layout.chips_separator;
-    }
-
-    @Override
-    protected int getSeparatorWithinGroupLayout() {
-        return R.layout.chips_separator_within_group;
-    }
-
     @Override
     protected int getWaitingForDirectorySearchLayout() {
         return R.layout.chips_waiting_for_directory_search;