Remove unused lychee arg

Author: spier

.github/workflows/link-checker.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Link Checker
         uses: lycheeverse/lychee-action@v2
         with:
-          args: --verbose --no-progress --exclude-mail --cache --max-cache-age 1d README.md patterns/ book/ translation/
+          args: --verbose --no-progress --cache --max-cache-age 1d README.md patterns/ book/ translation/
           fail: true
           jobSummary: true
         env: