chore: remove unused prettier uninstall step from CI

Author: SimenB

.github/workflows/nodejs.yml

@@ -79,9 +79,6 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node-version }}
-      - name: remove prettier dep
-        run: yarn remove-prettier-dep
-        if: matrix.node-version == '8.17.0'
       - name: install
         run: yarn install-no-ts-build
       - name: run tests