Update ci.yml

Author: SilanHe

.github/workflows/ci.yml

@@ -31,9 +31,6 @@ jobs:
           aws-durable-execution-sdk-python-testing
     - name: set up git
       run: git config --global url."https://${{ steps.generate-token.outputs.token }}@github".insteadOf https://github
-    - name: install aws-durable-execution-sdk-python
-      working-directory: aws-durable-execution-sdk-python
-      run: pip install .
     - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6