remove run of tests_v400

Author: syntron

.github/workflows/Test.yml

@@ -77,16 +77,6 @@ jobs:
           click-to-expand: true
           report-title: 'Test Report'
 
-      - name: Run pytest based on v4.0.0 compatibility layer
-        uses: pavelzw/pytest-action@v2
-        with:
-          verbose: true
-          emoji: true
-          job-summary: true
-          custom-arguments: '-v ./tests_v400'
-          click-to-expand: true
-          report-title: 'Test Report (v4.0.0 compatibility layer)'
-
   Publish:
     name: Publish to PyPI
     runs-on: ${{ matrix.os }}