Fix test_cli.py to use sample_spec_path fixture

tests/integration/test_cli.py

@@ -15,11 +15,6 @@ class TestCLIIntegration:
         """Create CLI runner."""
         return CliRunner()
 
-    @pytest.fixture
-    def sample_spec_path(self):
-        """Path to sample spec file."""
-        return "examples/petstore.yaml"
-
     def test_validate_command(self, runner, sample_spec_path):
         """Test validate command."""
         result = runner.invoke(cli, ["validate", sample_spec_path])