removed deploy to gh pages (done in dedicated deploy action)

Author: jruaux

.github/workflows/maven.yml

@@ -37,8 +37,3 @@ jobs:
         uses: codecov/codecov-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-      - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./target/generated-docs