chore: remove obsolete build steps

.github/workflows/documentation.yml

@@ -23,17 +23,9 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Install tools
-        run: make install
-
       - name: Build docs
         run: make docs
 
-      # - name: Clean git
-      #   run: |
-      #     git checkout go.*
-      #     rm -rf flags buildflags
-
       - name: Deploy to docs repo
         uses: peaceiris/actions-gh-pages@v3
         with: