Remove linkcheck

Author: dennisreimann

.github/workflows/build.yml

@@ -50,6 +50,3 @@ jobs:
           cname: docs.btcpayserver.org
           user_name: 'github-actions[bot]'
           user_email: 'github-actions[bot]@users.noreply.github.com'
-      # Run linkcheck, propagate linkcheck failure through grep pipe
-      - name: Linkcheck
-        run: set -o pipefail; npm run linkcheck 2>/dev/null | grep "Getting links from\|BROKEN"