tests: Replace umodule with module everywhere.

This work was funded through GitHub Sponsors.

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

tests/basics/bytes_add_endian.py

@@ -1,11 +1,8 @@
 # test bytes + other
 try:
-    import uarray as array
+    import array
 except ImportError:
-    try:
-        import array
-    except ImportError:
-        print("SKIP")
-        raise SystemExit
+    print("SKIP")
+    raise SystemExit
 
 print(b"123" + array.array('i', [1]))