Cleaner pytest results (#4711)

* silence deprecataion warnings

* add some sugar

* filter warnings to only display once

* remove pytest-sugar

---------

Co-authored-by: Omer Lachish <[email protected]>
Co-authored-by: Justin Clift <[email protected]>
Co-authored-by: Guido Petri <[email protected]>

Author: 4 people

pytest.ini

@@ -1,2 +1,5 @@
 [pytest]
 norecursedirs = *.egg .eggs dist build docs .tox
+filterwarnings =
+    once::DeprecationWarning
+    once::PendingDeprecationWarning