Remove D section from configuration page

- Remove D section (calculated lines) from configuration interface
- Remove D section from section headers configuration
- Simplify configuration page by removing unnecessary calculated section
- Clean up interface to show only configurable sections (A and B)

admin/setup_mvp.php

@@ -164,7 +164,6 @@ foreach ($lines_by_section as $section_code => $lines) {
     
     // Skip D-section lines (25, 26, 28, 29) as they are calculated
     if ($section_code == 'D') {
-        print '<div class="info"><strong>Note:</strong> Les lignes de la section D sont calculées automatiquement à partir des autres sections.</div>';
         continue;
     }
     

core/class/declarationtva_config.class.php

@@ -468,11 +468,6 @@ class DeclarationTVA_Config
                 'title' => 'B. DÉCOMPTE DE LA TVA À PAYER',
                 'description' => '',
                 'notice' => ''
-            ),
-            'D' => array(
-                'title' => 'D. RÉSULTAT',
-                'description' => '',
-                'notice' => ''
             )
         );
     }