Revert "Install mdbook-linkcheck plugin (#25)" (#26)

This reverts commit 1ff9ffa.

Author: lystopad

.github/workflows/pages-deployment.yaml

@@ -20,12 +20,11 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install latest mdbook and linkchecker
+      - name: Install latest mdbook
         run: |
           url="https://github.com/rust-lang/mdbook/releases/download/$MDBOOK_VERSION/mdbook-$MDBOOK_VERSION-x86_64-unknown-linux-gnu.tar.gz"
           mkdir mdbook
           curl -sSL $url | tar -xz --directory=./mdbook
-          cargo install mdbook-linkcheck
           echo `pwd`/mdbook >> $GITHUB_PATH
       - name: Build Book
         run: |
@@ -37,4 +36,4 @@ jobs:
         with:
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
           accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          command: pages deploy book --project-name=${{ secrets.CLOUDFLARE_PROJECT }} --commit-dirty=true
+          command: pages deploy book --project-name=${{ secrets.CLOUDFLARE_PROJECT }} --commit-dirty=true