ci: 移除 maple-font 的克隆和构建步骤

简化工作流程，直接安装依赖项而不需要克隆和构建 maple-font 仓库

Author: liuxinwei

.github/workflows/pages.yml

@@ -45,10 +45,7 @@ jobs:
           sudo apt-get install graphviz
           apt-get update && sudo apt-get upgrade
           pip install --upgrade pip
-          git clone --recursive https://github.com/xinetzone/maple-font.git
-          cd maple-font
           pip install -ve .[doc,flows,dev]
-          maple-font build --full
           conda install -c conda-forge pandoc compilers podman
       - name: 🔧 Build HTML
         run: |