Remove xdist thing from pythonpackage.yml GitHub workflow

.github/workflows/pythonpackage.yml

@@ -50,7 +50,7 @@ jobs:
       - name: Install dependencies for 3.12 # https://github.com/Textualize/textual/issues/3491#issuecomment-1854156476
         run: poetry install --no-interaction
         if: ${{ matrix.python-version == '3.12' }}
-      - name: Test with pytest (xdist)
+      - name: Test with pytest
         run: |
           poetry run pytest tests -v --cov=./src/textual --cov-report=xml:./coverage.xml --cov-report term-missing
         if: ${{ matrix.python-version != '3.12' }}