diff --git a/favorites.js b/favorites.js
deleted file mode 100644
index f707507..0000000
--- a/favorites.js
+++ /dev/null
@@ -1,38 +0,0 @@
-const favoritesList = document.getElementById('favorites-list');
-let favorites = JSON.parse(localStorage.getItem('favorites')) || [];
-
-function displayFavorites() {
-  favoritesList.innerHTML = '';
-  favorites.forEach(snack => {
-    const li = document.createElement('li');
-    li.innerHTML = `
-      <span>${snack.name} (${snack.type})</span>
-      <button onclick="removeFromFavorites(${snack.id})">削除</button>
-    `;
-    favoritesList.appendChild(li);
-  });
-}
-
-function removeFromFavorites(id) {
-  if (confirm('本当に削除しますか？')) {
-    favorites = favorites.filter(snack => snack.id !== id);
-    localStorage.setItem('favorites', JSON.stringify(favorites));
-    displayFavorites();
-  }
-}
-
-function sortFavorites(sortBy) {
-  if (sortBy === 'name') {
-    favorites.sort((a, b) => a.name.localeCompare(b.name));
-  } else if (sortBy === 'date') {
-    favorites.sort((a, b) => new Date(b.dateAdded) - new Date(a.dateAdded));
-  }
-  displayFavorites();
-}
-
-document.getElementById('sort-select').addEventListener('change', (e) => {
-  sortFavorites(e.target.value);
-});
-
-// 初期表示
-displayFavorites();