Refactor CI workflow by removing unnecessary steps

.github/workflows/ci.yml

@@ -8,9 +8,6 @@ on:
 
 permissions:
   contents: read
-  id-token: write         # required for OIDC
-  checks: write           # optional: to publish a GitHub Check summary
-  pull-requests: write    # optional
 
 jobs:
   test:
@@ -21,7 +18,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-        with: { fetch-depth: 0 }  # let Codecov resolve parents
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -33,28 +29,8 @@ jobs:
           python -m pip install --upgrade pip
           pip install -e .[dev]
 
-      - name: Run tests with coverage (JIT disabled)
-        env: { NUMBA_DISABLE_JIT: 1 }
+      - name: Run tests (JIT disabled)
+        env:
+          NUMBA_DISABLE_JIT: 1
         run: |
-          pytest tests/ --cov=finmlkit --cov-report=xml:coverage.xml -v
-
-      - name: Debug SHAs
-        run: |
-          echo "GITHUB_SHA=$GITHUB_SHA"
-          git rev-parse HEAD
-          git show -s --pretty=reference HEAD
-
-      # Upload from a single matrix job to avoid merge/fan-in issues
-      - name: Upload coverage to Codecov (OIDC, single job)
-        if: matrix.python-version == '3.12'
-        uses: codecov/codecov-action@v5
-        with:
-          use_oidc: true
-          files: ./coverage.xml
-          flags: unittests
-          name: codecov-umbrella  
-          override_branch: ${{ github.head_ref || github.ref_name }}
-          override_commit: ${{ github.sha }}
-          override_pr: ${{ github.event.number }}
-          fail_ci_if_error: true
-          verbose: true
+          pytest tests/ -v