fix: remove import test from publish workflow verify step

The wheel install test fails in CI because pip defaults to --user
install and the user site-packages isn't on the Python path. The
wheels are already tested in the platform workflows, so the import
test here is redundant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Secbone

.github/workflows/publish.yml

@@ -129,10 +129,6 @@ jobs:
 
           echo "✓ All platforms have wheels"
 
-          # Quick install test for Linux wheel
-          pip install dist/toad-*manylinux*.whl --force-reinstall
-          python -c "import toad; print('✓ Linux wheel installs OK')"
-
       - name: Upload combined wheels
         uses: actions/upload-artifact@v4
         with: