Revert " fix CI "

.github/workflows/python-package-conda.yml

@@ -14,6 +14,10 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: 3.8.12
+    - name: Add conda to system path
+      run: |
+        # $CONDA is an environment variable pointing to the root of the miniconda directory
+        echo $CONDA/bin >> $GITHUB_PATH
     - name: Install dependencies
       run: |
         pip install --upgrade pip
@@ -38,7 +42,7 @@ jobs:
         done < ${GITHUB_WORKSPACE}/scripts/tensor_names/suitesparse_ci.txt
     - name: Lint with flake8
       run: |
-        pip install flake8
+        conda install flake8
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude venv
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide