[folks] Simplify NoteFieldDetails.equal()

[Travis Reitter <treitter src gnome org>]

commit aefe543c31a3802b4c5c033b2b45a3744e7dc151
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Fri Oct 21 16:05:30 2011 -0700

    Simplify NoteFieldDetails.equal()

 folks/note-details.vala |    9 +--------
 1 files changed, 1 insertions(+), 8 deletions(-)
---
diff --git a/folks/note-details.vala b/folks/note-details.vala
index 0c42389..02c3ed9 100644
--- a/folks/note-details.vala
+++ b/folks/note-details.vala
@@ -84,14 +84,7 @@ public class Folks.NoteFieldDetails : AbstractFieldDetails<string>
    */
   public override bool equal (AbstractFieldDetails<string> that)
     {
-      if (!base.equal<string> (that))
-        return false;
-
-      var that_nfd = that as NoteFieldDetails;
-      if (that_nfd == null)
-        return false;
-
-      return (this.value == that_nfd.value);
+      return base.equal<string> (that);
     }
 
   /**