refactor: 移除无用的工作流步骤以加快构建速度

.github/workflows/build.yml

@@ -51,8 +51,6 @@ jobs:
           git: https://github.com/KaiserY/mdbook-typst-pdf
       - name: Install fonts
         run: |
-          echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | sudo debconf-set-selections
-          sudo apt-get -y install msttcorefonts
           mkdir fonts
           mkdir -p ~/.local/share/fonts
           curl -sL -o Noto_Sans.zip https://fonts.google.com/download?family=Noto%20Sans