Remove lerna test from ci

[BenjaminMoe]

In our CI we have

      - name: Test
        run: npm run test

      - name: Jest
        run: cd packages/traceability-schemas && npm run test

The first test is going to call npm run test, which is mapped to lerna run test. This is going to call the npm run test method for each one of the packages. And since we only have one package, these two commands are doing the same thing.