[cleanup] Remove MultiTypeBlockVector::count()

CHANGELOG.md

@@ -19,6 +19,8 @@ SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
 
 - Removed deprecated `MultyTypeBlockMatrix::size()`, use `N()` instead.
 
+- Removed deprecated `MultyTypeBlockVector::count()`, use `N()` instead.
+
 
 # Release 2.9
 

dune/istl/multitypeblockvector.hh

@@ -104,18 +104,6 @@ namespace Dune {
       return sizeof...(Args);
     }
 
-    /**
-     * number of elements
-     *
-     * \deprecated Use method <code>N</code> instead.
-     *             This will be removed after Dune 2.8.
-     */
-    [[deprecated("Use method 'N' instead")]]
-    int count() const
-    {
-      return sizeof...(Args);
-    }
-
     /** \brief Number of scalar elements */
     size_type dim() const
     {