Remove namespace references.

Zend/ZEND_CHANGES

@@ -293,54 +293,6 @@ Changes in the Zend Engine 2.0
         print $obj->address . "\n";
         ?>
 
-    * Namespaces.
-
-      The Zend Engine 1.0 provided only three scopes: the global
-      scope, the class scope and the function scope. All scopes but
-      classes could contain variables, only the class and global
-      scopes could contain functions, while only the global scope
-      could contain constants and classes. This means that all of the
-      Zend Engine 1.0's scoping methods were inherently limited for
-      solving symbol name collision problems.
-
-      The Zend Engine 2.0 introduces the concept of namespaces
-      to solve the symbol collision problem by making it possible to
-      define multiple symbol tables able to contain all types of
-      symbols.
-
-      A namespace may contain classes, constants, functions and variables. 
-      The member of a namespace is accessed by prefixing its name with the 
-      name of the namespace followed by '::'.
-
-      Example:
-
-        <?php
-        namespace Foo {
-          class Bar {}
-          const aConstant = 'someValue';
-          function aFunction() {}
-          var $aVariable;
-        }
-
-        $o = new Foo::Bar;
-        echo Foo::aConstant;
-        Foo::aFunction();
-        Foo::$aVariable = 'someValue';
-        ?>
-
-      A namespace's name may contain colons to denote "sub-namespaces".
-      This is pure syntactic sugar, the Zend Engine will not see, for 
-      instance, the namespaces "Package", "Package:Subpackage" and 
-      "Package:Subpackage:Subsubpackage" as related.
-
-      Namespaces can be neither nested nor instantiated.
-
-      To avoid ambiguities in the '::' resolution there may be no
-      global class and namespace with the same name.
-
-      Old code that has no user-defined classes or functions named 
-      'namespace' should run without modifications.
-
     * Unified Constructors.
 
       The Zend Engine allows developers to declare constructor methods
@@ -428,8 +380,7 @@ Changes in the Zend Engine 2.0
 
     * Constants.
 
-      The Zend Engine 2.0 introduces per-class and per-namespace
-      constants.
+      The Zend Engine 2.0 introduces per-class constants.
 
       Example: