Skip test case in pypy or windows (open-telemetry#3986)

* Skip test case when running in Windows or Pypy

Fixes open-telemetry#3985

* Use pytest-retry on flaky test case

* Remove flaky

* Use flaky instead

* Revert "Use flaky instead"

This reverts commit 4d433d6.

* Revert "Remove flaky"

This reverts commit cc26486.

* Revert "Use pytest-retry on flaky test case"

This reverts commit e96ea89.

* One last attempt with a forced delay

* Revert "One last attempt with a forced delay"

This reverts commit 75717d9.

* Fix comment

* Fix zipp requirements

* Remove flaky

opentelemetry-sdk/tests/trace/export/test_export.py

@@ -462,8 +462,8 @@ def _target():
         span_processor.shutdown()
 
     @mark.skipif(
-        python_implementation() == "PyPy" and system() == "Windows",
-        reason="This test randomly fails with huge delta in Windows with PyPy",
+        python_implementation() == "PyPy" or system() == "Windows",
+        reason="This test randomly fails with huge delta in Windows or PyPy",
     )
     def test_batch_span_processor_scheduled_delay(self):
         """Test that spans are exported each schedule_delay_millis"""