Simplify PyOP2 workflow

.github/workflows/pyop2.yml

@@ -53,14 +53,6 @@ jobs:
           ./configure "$PETSC_CONFIGURE_OPTIONS"
           make
 
-      - name: Build and install petsc4py
-        shell: bash
-        working-directory: ${{ env.PETSC_DIR }}/src/binding/petsc4py
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade wheel cython numpy
-          python -m pip install --no-deps .
-
       - name: Checkout PyOP2
         uses: actions/checkout@v4
         with:
@@ -70,20 +62,14 @@ jobs:
         shell: bash
         working-directory: PyOP2
         run: |
-          python -m pip install -U flake8
+          python -m pip install -U pip
           python -m pip install -U pytest-timeout
-          python -m pip install -U setuptools
 
       - name: Install PyOP2
         shell: bash
         working-directory: PyOP2
         run: python -m pip install -v ".[test]"
 
-      - name: Run linting
-        shell: bash
-        working-directory: PyOP2
-        run: make lint
-
       - name: Run tests
         shell: bash
         working-directory: PyOP2