refactor on components and delete clear, profesional login

web/backend/services/mongodb.js

@@ -799,21 +799,6 @@ export async function updateArticleFavorite(platform, id, is_favorite, username)
   }
 }
 
-export async function clearAllArticles() {
-  if (!db) {
-    return 0;
-  }
-  
-  try {
-    const articlesCollection = db.collection('articles');
-    const result = await articlesCollection.deleteMany({});
-    return result.deletedCount;
-  } catch (error) {
-    console.error('Error limpiando artículos:', error.message);
-    return 0;
-  }
-}
-
 // Cerrar conexión
 export async function closeMongoDB() {
   if (mongoClient) {