chore(admin): 隐藏底部保存/取消按钮（已移至顶部）

cfc-web/src/views/admin/ProductEdit.vue

@@ -342,10 +342,7 @@
           </div>
         </el-form-item>
 
-        <div class="edit-form-footer">
-          <el-button type="primary" :loading="saving" @click="handleSave()">{{ isEdit ? '保存修改' : '创建商品' }}</el-button>
-          <el-button @click="$router.back()">取消</el-button>
-        </div>
+        <div class="edit-form-footer" style="display:none;"></div>
       </el-form>
       </div>
     </el-card>