tests: Replace umodule with module everywhere.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

tests/basics/async_await2.py

@@ -1,9 +1,6 @@
 # test await expression
 
-try:
-    import usys as sys
-except ImportError:
-    import sys
+import sys
 if sys.implementation.name == 'micropython':
     # uPy allows normal generators to be awaitables
     coroutine = lambda f: f