[gxml] Removed SerializableBool from SerializableObjectModel

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 25d807139f41ac95875611a348e50fd0e044b3e6
Author: Daniel Espinosa <esodan gmail com>
Date:   Sun Nov 1 12:57:47 2015 -0600

    Removed SerializableBool from SerializableObjectModel

 gxml/SerializableBool.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gxml/SerializableBool.vala b/gxml/SerializableBool.vala
index bf1b061..d42332b 100644
--- a/gxml/SerializableBool.vala
+++ b/gxml/SerializableBool.vala
@@ -25,7 +25,7 @@ using Gee;
  * Represent any boolean property to be added as a { link GXml.Attribute} to a { link GXml.Element}
  *
  */
-public class GXml.SerializableBool : SerializableObjectModel, SerializableProperty
+public class GXml.SerializableBool : Object, SerializableProperty
 {
   private string _val = null;
 
@@ -50,5 +50,5 @@ public class GXml.SerializableBool : SerializableObjectModel, SerializableProper
   /**
    * Parse actual stored string to a boolean and returns the result. See { link get_value}
    */
-  public override string to_string () { return get_value ().to_string (); }
+  public string to_string () { return get_value ().to_string (); }
 }