Remove steps that are part of Makefile

Signed-off-by: Sebastian Malton <sebastian@malton.name>

.github/workflows/test.yml

@@ -52,17 +52,6 @@ jobs:
           retry_on: error
           command: make node_modules
 
-      - run: make build-npm
-        name: Generate npm package
-
-      - uses: nick-fields/retry@v2
-        name: Build bundled extensions
-        with:
-          timeout_minutes: 15
-          max_attempts: 3
-          retry_on: error
-          command: make -j2 build-extensions
-
       - run: make test
         name: Run tests
         if: ${{ matrix.type === "unit" }}